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       <?php
       /**
        * @file
        * Documentation for hooks provided by the Rules API.
+       *
        * This file contains no working PHP code; it exists to provide additional
        * documentation for doxygen as well as to document hooks in the standard
        * Drupal manner.
        */
       /**
        * @defgroup rules Rules module integrations.
+       *
        * Module integrations with the rules module.
+       *
        * The Rules developer documentation describes how modules can integrate with
        * rules: https://www.drupal.org/node/298486.
        */
       /**
        * @defgroup rules_hooks Rules' hooks
        * @{
        * Hooks that can be implemented by other modules in order to extend rules.
        */
       /**
        * Define rules compatible actions.
+       *
        * This hook is required in order to add a new rules action. It should be
        * placed into the file MODULENAME.rules.inc, which gets automatically included
        * when the hook is invoked.
+       *
        * However, as an alternative to implementing this hook, class based plugin
        * handlers may be provided by implementing RulesActionHandlerInterface. See
        * the interface for details.
+       *
        * @return array
        *   An array of information about the module's provided rules actions.
        *   The array contains a sub-array for each action, with the action name as
        *   the key. Actions names may only contain lowercase alpha-numeric characters
        *   and underscores and should be prefixed with the providing module name.
        *   Possible attributes for each sub-array are:
        *   - label: The label of the action. Start capitalized. Required.
        *   - group: A group for this element, used for grouping the actions in the
        *     interface. Should start with a capital letter and be translated.
        *     Required.
        *   - parameter: (optional) An array describing all parameter of the action
        *     with the parameter's name as key. Each parameter has to be
        *     described by a sub-array with possible attributes as described
        *     afterwards, whereas the name of a parameter needs to be a lowercase,
        *     valid PHP variable name.
        *   - provides: (optional) An array describing the variables the action
        *     provides to the evaluation state with the variable name as key. Each
        *     variable has to be described by a sub-array with possible attributes as
        *     described afterwards, whereas the name of a parameter needs to be a
        *     lowercase, valid PHP variable name.
        *   - 'named parameter': (optional) If set to TRUE, the arguments will be
        *     passed as a single array with the parameter names as keys. This emulates
        *     named parameters in PHP and is in particular useful if the number of
        *     parameters can vary. Defaults to FALSE.
        *   - base: (optional) The base for action implementation callbacks to use
        *     instead of the action's name. Defaults to the action name.
        *   - callbacks: (optional) An array which allows to set specific function
        *     callbacks for the action. The default for each callback is the actions
        *     base appended by '_' and the callback name.
        *   - 'access callback': (optional) A callback which has to return whether the
        *     currently logged in user is allowed to configure this action. See
        *     rules_node_integration_access() for an example callback.
        *   Each 'parameter' array may contain the following properties:
        *   - label: The label of the parameter. Start capitalized. Required.
        *   - type: The rules data type of the parameter, which is to be passed to the
        *     action. All types declared in hook_rules_data_info() may be specified, as
        *     well as an array of possible types. Also lists and lists of a given type
        *     can be specified by using the notating list<integer> as introduced by
        *     the entity metadata module, see hook_entity_property_info(). The special
        *     keyword '*' can be used when all types should be allowed. Required.
        *   - bundles: (optional) An array of bundle names. When the specified type is
        *     set to a single entity type, this may be used to restrict the allowed
        *     bundles.
        *   - description: (optional) If necessary, a further description of the
        *     parameter.
        *   - options list: (optional) A callback that returns an array of possible
        *     values for this parameter. The callback has to return an array as used
        *     by hook_options_list(). For an example implementation see
        *     rules_data_action_type_options().
        *   - save: (optional) If this is set to TRUE, the parameter will be saved by
        *     rules when the rules evaluation ends. This is only supported for savable
        *     data types. If the action returns FALSE, saving is skipped.
        *   - optional: (optional) May be set to TRUE, when the parameter isn't
        *     required.
        *   - 'default value': (optional) The value to pass to the action, in case the
        *     parameter is optional and there is no specified value.
        *   - 'allow null': (optional) Usually Rules will not pass any NULL values as
        *     argument, but abort the evaluation if a NULL value is present. If set to
        *     TRUE, Rules will not abort and pass the NULL value through. Defaults to
        *     FALSE.
        *   - restriction: (optional) Restrict how the argument for this parameter may
        *     be provided. Supported values are 'selector' and 'input'.
        *   - default mode: (optional) Customize the default mode for providing the
        *     argument value for a parameter. Supported values are 'selector' and
        *     'input'. The default depends on the required data type.
        *   - sanitize: (optional) Allows parameters of type 'text' to demand an
        *     already sanitized argument. If enabled, any user specified value won't be
        *     sanitized itself, but replacements applied by input evaluators are as
        *     well as values retrieved from selected data sources.
        *   - translatable: (optional) If set to TRUE, the provided argument value
        *     of the parameter is translatable via i18n String translation. This is
        *     applicable for textual parameters only, i.e. parameters of type 'text',
        *     'token', 'list<text>' and 'list<token>'. Defaults to FALSE.
        *   - ui class: (optional) Allows overriding the UI class, which is used to
        *     generate the configuration UI of a parameter. Defaults to the UI class of
        *     the specified data type.
        *   - cleaning callback: (optional) A callback that input evaluators may use
        *     to clean inserted replacements; e.g. this is used by the token evaluator.
        *   - wrapped: (optional) Set this to TRUE in case the data should be passed
        *     wrapped. This only applies to wrapped data types, e.g. entities.
        *   Each 'provides' array may contain the following properties:
        *   - label: The label of the variable. Start capitalized. Required.
        *   - type: The rules data type of the variable. All types declared in
        *     hook_rules_data_info() may be specified. Types may be parametrized e.g.
        *     the types node<page> or list<integer> are valid.
        *   - save: (optional) If this is set to TRUE, the provided variable is saved
        *     by rules when the rules evaluation ends. Only possible for savable data
        *     types. Defaults to FALSE.
        *   The module has to provide an implementation for each action, being a
        *   function named as specified in the 'base' key or for the execution callback.
        *   All other possible callbacks are optional.
        *   Supported action callbacks by rules are defined and documented in the
        *   RulesPluginImplInterface. However any module may extend the action plugin
        *   based upon a defined interface using hook_rules_plugin_info(). All methods
        *   defined in those interfaces can be overridden by the action implementation.
        *   The callback implementations for those interfaces may reside in any file
        *   specified in hook_rules_file_info().
+       *
        * @see hook_rules_file_info()
        * @see rules_action_execution_callback()
        * @see hook_rules_plugin_info()
        * @see RulesPluginImplInterface
        */
       function hook_rules_action_info() {
         return array(
           'mail_user' => array(
             'label' => t('Send a mail to a user'),
             'parameter' => array(
               'user' => array('type' => 'user', 'label' => t('Recipient')),
             ),
             'group' => t('System'),
             'base' => 'rules_action_mail_user',
             'callbacks' => array(
               'validate' => 'rules_action_custom_validation',
               'help' => 'rules_mail_help',
             ),
           ),
         );
+      }
       /**
        * Define categories for Rules items, e.g. actions, conditions or events.
+       *
        * Categories are similar to the previously used 'group' key in e.g.
        * hook_rules_action_info(), but have a machine name and some more optional
        * keys like a weight, or an icon.
+       *
        * For best compatibility, modules may keep using the 'group' key for referring
        * to categories. However, if a 'group' key and a 'category' is given the group
        * will be treated as grouping in the given category (e.g. group "paypal" in
        * category "commerce payment").
+       *
        * @return array
        *   An array of information about the module's provided categories.
        *   The array contains a sub-array for each category, with the category name as
        *   the key. Names may only contain lowercase alpha-numeric characters
        *   and underscores and should be prefixed with the providing module name.
        *   Possible attributes for each sub-array are:
        *   - label: The label of the category. Start capitalized. Required.
        *   - weight: (optional) A weight for sorting the category. Defaults to 0.
        *   - equals group: (optional) For BC, categories may be defined that equal
        *     a previously used 'group'.
        *   - icon: (optional) The file path of an icon to use, relative to the module
        *     or specified icon path. The icon should be a transparent SVG containing
        *     no colors (only #fff). See https://www.drupal.org/node/2090265 for
        *     instructions on how to create a suitable icon.
        *     Note that the icon is currently not used by Rules, however other UIs
        *     building upon Rules (like fluxkraft) do, and future releases of Rules
        *     might do as well. Consequently, the definition of an icon is optional.
        *     However, if both an icon font and icon is given, the icon is preferred.
        *   - icon path: (optional) The base path for the icon. Defaults to the
        *     providing module's directory.
        *   - icon font class: (optional) An icon font class referring to a suitable
        *     icon. Icon font class names should map to the ones as defined by Font
        *     Awesome, while themes might want to choose to provide another icon font.
        *     See http://fortawesome.github.io/Font-Awesome/cheatsheet/.
        *   - icon background color: (optional) The color used as icon background.
        *     Should have a high contrast to white. Defaults to #ddd.
        */
       function hook_rules_category_info() {
         return array(
           'rules_data' => array(
             'label' => t('Data'),
             'equals group' => t('Data'),
             'weight' => -50,
           ),
           'fluxtwitter' => array(
             'label' => t('Twitter'),
             'icon font class' => 'icon-twitter',
             'icon font background color' => '#30a9fd',
           ),
         );
+      }
       /**
        * Specify files containing rules integration code.
+       *
        * All files specified in that hook will be included when rules looks for
        * existing callbacks for any plugin. Rules remembers which callback is found in
        * which file and automatically includes the right file before it is executing
        * a plugin method callback. The file yourmodule.rules.inc is added by default
        * and need not be specified here.
        * This allows you to add new include files only containing functions serving as
        * plugin method callbacks in any file without having to care about file
        * inclusion.
+       *
        * @return array
        *   An array of file names without the file ending which defaults to '.inc'.
        */
       function hook_rules_file_info() {
         return array('yourmodule.rules-eval');
+      }
       /**
        * Specifies directories for class-based plugin handler discovery.
+       *
        * Implementing this hook is not a requirement, it is just one option to load
        * the files containing the classes during discovery - see
        * rules_discover_plugins().
+       *
        * @return string|array
        *   A directory relative to the module directory, which holds the files
        *   containing rules plugin handlers, or multiple directories keyed by the
        *   module the directory is contained in.
        *   All files in those directories having a 'php' or 'inc' file extension will
        *   be loaded during discovery. Optionally, wildcards ('*') may be used to
        *   match multiple directories.
+       *
        * @see rules_discover_plugins()
        */
       function hook_rules_directory() {
         return 'lib/Drupal/fluxtwitter/Rules/*';
+      }
       /**
        * The execution callback for an action.
+       *
        * It should be placed in any file included by your module or in a file
        * specified using hook_rules_file_info().
+       *
        * @param
        *   The callback gets arguments passed as described as parameter in
        *   hook_rules_action_info() as well as an array containing the action's
        *   configuration settings.
+       *
        * @return array
        *   The action may return an array containing parameter or provided variables
        *   with their names as key. This is used update the value of a parameter or to
        *   provide the value for a provided variable.
        *   Apart from that any parameters which have the key 'save' set to TRUE will
        *   be remembered to be saved by rules unless the action returns FALSE.
        *   Conditions have to return a boolean value in any case.
+       *
        * @see hook_rules_action_info()
        * @see hook_rules_file_info()
        */
       function rules_action_execution_callback($node, $title, $settings) {
         $node->title = $title;
         return array('node' => $node);
+      }
       /**
        * Define rules conditions.
+       *
        * This hook is required in order to add a new rules condition. It should be
        * placed into the file MODULENAME.rules.inc, which gets automatically included
        * when the hook is invoked.
+       *
        * However, as an alternative to implementing this hook, class based plugin
        * handlers may be provided by implementing RulesConditionHandlerInterface. See
        * the interface for details.
+       *
        * Adding conditions works exactly the same way as adding actions, with the
        * exception that conditions can't provide variables and cannot save parameters.
        * Thus the 'provides' attribute is not supported. Furthermore the condition
        * implementation callback has to return a boolean value.
+       *
        * @see hook_rules_action_info()
        */
       function hook_rules_condition_info() {
         return array(
           'rules_condition_text_compare' => array(
             'label' => t('Textual comparison'),
             'parameter' => array(
               'text1' => array('label' => t('Text 1'), 'type' => 'text'),
               'text2' => array('label' => t('Text 2'), 'type' => 'text'),
             ),
             'group' => t('Rules'),
           ),
         );
+      }
       /**
        * Define rules events.
+       *
        * This hook is required in order to add a new rules event. It should be
        * placed into the file MODULENAME.rules.inc, which gets automatically included
        * when the hook is invoked.
        * The module has to invoke the event when it occurs using rules_invoke_event().
        * This function call has to happen outside of MODULENAME.rules.inc,
        * usually it's invoked directly from the providing module but wrapped by a
        * module_exists('rules') check.
+       *
        * However, as an alternative to implementing this hook, class based event
        * handlers may be provided by implementing RulesEventHandlerInterface. See
        * the interface for details.
+       *
        * @return array
        *   An array of information about the module's provided rules events. The array
        *   contains a sub-array for each event, with the event name as the key. The
        *   name may only contain lower case alpha-numeric characters and underscores
        *   and should be prefixed with the providing module name. Possible attributes
        *   for each sub-array are:
        *   - label: The label of the event. Start capitalized. Required.
        *   - group: A group for this element, used for grouping the events in the
        *     interface. Should start with a capital letter and be translated.
        *     Required.
        *   - class: (optional) An event handler class implementing the
        *     RulesEventHandlerInterface. If none is specified the
        *     RulesEventDefaultHandler class will be used. While the default event
        *     handler has no settings, custom event handlers may be implemented to
        *     to make an event configurable. See RulesEventHandlerInterface.
        *   - access callback: (optional) An callback, which has to return whether the
        *     currently logged in user is allowed to configure rules for this event.
        *     Access should be only granted, if the user at least may access all the
        *     variables provided by the event.
        *   - help: (optional) A help text for rules reaction on this event.
        *   - variables: (optional) An array describing all variables that are
        *     available for elements reacting on this event. Each variable has to be
        *     described by a sub-array with the possible attributes:
        *     - label: The label of the variable. Start capitalized. Required.
        *     - type: The rules data type of the variable. All types declared in
        *       hook_rules_data_info() or supported by hook_entity_property_info() may
        *       be specified.
        *     - bundle: (optional) If the type is an entity type, the bundle of the
        *       entity.
        *     - description: (optional) A description for the variable.
        *     - 'options list': (optional) A callback that returns an array of possible
        *       values for this variable as specified for entity properties at
        *       hook_entity_property_info().
        *     - 'skip save': (optional) If the variable is saved after the event has
        *       occurred anyway, set this to TRUE. So rules won't save the variable a
        *       second time. Defaults to FALSE.
        *     - handler: (optional) A handler to load the actual variable value. This
        *       is useful for lazy loading variables. The handler gets all so far
        *       available variables passed in the order as defined. Also see
        *       https://www.drupal.org/node/884554.
        *       Note that for lazy-loading entities just the entity id may be passed
        *       as variable value, so a handler is not necessary in that case.
+       *
        * @see rules_invoke_event()
        */
       function hook_rules_event_info() {
         $items = array(
           'node_insert' => array(
             'label' => t('After saving new content'),
             'group' => t('Node'),
             'variables' => rules_events_node_variables(t('created content')),
           ),
           'node_update' => array(
             'label' => t('After updating existing content'),
             'group' => t('Node'),
             'variables' => rules_events_node_variables(t('updated content'), TRUE),
           ),
           'node_presave' => array(
             'label' => t('Content is going to be saved'),
             'group' => t('Node'),
             'variables' => rules_events_node_variables(t('saved content'), TRUE),
           ),
           'node_view' => array(
             'label' => t('Content is going to be viewed'),
             'group' => t('Node'),
             'variables' => rules_events_node_variables(t('viewed content')) + array(
               'view_mode' => array('type' => 'text', 'label' => t('view mode')),
             ),
           ),
           'node_delete' => array(
             'label' => t('After deleting content'),
             'group' => t('Node'),
             'variables' => rules_events_node_variables(t('deleted content')),
           ),
         );
         // Specify that on presave the node is saved anyway.
         $items['node_presave']['variables']['node']['skip save'] = TRUE;
         return $items;
+      }
       /**
        * Define rules data types.
+       *
        * This hook is required in order to add a new rules data type. It should be
        * placed into the file MODULENAME.rules.inc, which gets automatically included
        * when the hook is invoked.
        * Rules builds upon the entity metadata module, thus to improve the support of
        * your data in rules, make it an entity if possible and provide metadata about
        * its properties and CRUD functions by integrating with the entity metadata
        * module.
        * For a list of data types defined by rules see rules_rules_core_data_info().
+       *
        * @return array
        *   An array of information about the module's provided data types. The array
        *   contains a sub-array for each data type, with the data type name as the
        *   key. The name may only contain lower case alpha-numeric characters and
        *   underscores and should be prefixed with the providing module name. Possible
        *   attributes for each sub-array are:
        *   - label: The label of the data type. Start uncapitalized. Required.
        *   - parent: (optional) A parent type may be set to specify a sub-type
        *     relationship, which will be only used for checking compatible types. E.g.
        *     the 'entity' data type is parent of the 'node' data type, thus a node may
        *     be also used for any action needing an 'entity' parameter. Can be set to
        *     any known rules data type.
        *   - ui class: (optional) Specify a class that is used to generate the
        *     configuration UI to configure parameters of this type. The given class
        *     must extend RulesDataUI and may implement the
        *     RulesDataDirectInputFormInterface in order to allow the direct data input
        *     configuration mode. For supporting selecting values from options lists,
        *     the UI class may implement RulesDataInputOptionsListInterface also.
        *     Defaults to RulesDataUI.
        *   - wrap: (optional) If set to TRUE, the data is wrapped internally using
        *     wrappers provided by the entity API module. This is required for entities
        *     and data structures to support selecting a property via the data selector
        *     and for intelligent saving.
        *   - is wrapped: (optional) In case the data wrapper is already wrapped when
        *     passed to Rules and Rules should not unwrap it when passing the data as
        *     argument, e.g. to an action, set this to TRUE. The default FALSE is fine
        *     in most cases.
        *   - wrapper class: (optional) Allows the specification of a custom wrapper
        *     class, which has to inherit from 'EntityMetadataWrapper'. If given Rules
        *     makes use of the class for wrapping the data of the given type. However
        *     note that if data is already wrapped when it is passed to Rules, the
        *     existing wrappers will be kept.
        *     For modules implementing identifiable data types being non-entities the
        *     class RulesIdentifiableDataWrapper is provided, which can be used as base
        *     for a custom wrapper class. See RulesIdentifiableDataWrapper for details.
        *   - property info: (optional) May be used for non-entity data structures to
        *     provide info about the data properties, such that data selectors via an
        *     entity metadata wrapper are supported. Specify an array as expected by
        *     the $info parameter of entity_metadata_wrapper().
        *   - creation callback: (optional) If 'property info' is given, an optional
        *     callback that makes use of the property info to create a new instance of
        *     this data type. Entities should use hook_entity_info() to specify the
        *     'creation callback' instead, as utilized by the entity API module. See
        *     rules_action_data_create_array() for an example callback.
        *   - property defaults: (optional) May be used for non-entity data structures
        *     to to provide property info defaults for the data properties. Specify an
        *     array as expected by entity_metadata_wrapper().
        *   - group: (optional) A group for this element, used for grouping the data
        *     types in the interface. Should start with a capital letter and be
        *     translated.
        *   - token type: (optional) The type name as used by the token module.
        *     Defaults to the type name as used by rules. Use FALSE to let token ignore
        *     this type.
        *   - cleaning callback: (optional) A callback that input evaluators may use
        *     to clean inserted replacements; e.g. this is used by the token evaluator.
+       *
        * @see entity_metadata_wrapper()
        * @see hook_rules_data_info_alter()
        * @see rules_rules_core_data_info()
        */
       function hook_rules_data_info() {
         return array(
           'node' => array(
             'label' => t('content'),
             'parent' => 'entity',
             'group' => t('Node'),
           ),
           // Formatted text as used by in hook_entity_property_info() for text fields.
           'text_formatted' => array(
             'label' => t('formatted text'),
             'ui class' => 'RulesDataUITextFormatted',
             'wrap' => TRUE,
             'property info' => entity_property_text_formatted_info(),
           ),
         );
+      }
       /**
        * Defines rules plugins.
+       *
        * A rules configuration may consist of elements being instances of any rules
        * plugin. This hook can be used to define new or to extend rules plugins.
+       *
        * @return array
        *   An array of information about the module's provided rules plugins. The
        *   array contains a sub-array for each plugin, with the plugin name as the
        *   key. The name may only contain lower case alpha-numeric characters,
        *   underscores and spaces and should be prefixed with the providing module
        *   name. Possible attributes for
        *   each sub-array are:
        *   - label: A label for the plugin. Start capitalized. Required only for
        *     components (see below).
        *   - class: The implementation class. Has to extend the RulesPlugin class.
        *   - embeddable: A container class in which elements of those plugin may be
        *     embedded via the UI or FALSE to disallow embedding it via the UI. This
        *     has no implications on the API level though. Common classes that are
        *     used here are RulesConditionContainer and RulesActionContainer.
        *   - component: If set to TRUE, the rules admin UI will list elements of those
        *     plugin in the components UI and allows the creation of new components
        *     based upon this plugin. Optional.
        *   - extenders: This allows one to specify faces extenders, which may be used
        *     to dynamically implement interfaces. Optional. All extenders specified
        *     here are setup automatically by rules once the object is created. To
        *     specify set this to an array, where the keys are the implemented
        *     interfaces pointing to another array with the keys:
        *     - class: The class of the extender, implementing the FacesExtender
        *       and the specified interface. Either 'class' or 'methods' has to exist.
        *     - methods: An array of callbacks that implement the methods of the
        *       interface where the method names are the keys and the callback names
        *       the values. There has to be a callback for each defined method.
        *     - file: An optional array describing the file to include when a method
        *       of the interface is invoked. The array entries known are 'type',
        *       'module', and 'name' matching the parameters of module_load_include().
        *       Only 'module' is required as 'type' defaults to 'inc' and 'name' to
        *       NULL.
        *   - overrides: An optional array, which may be used to specify callbacks to
        *     override specific methods. For that the following keys are supported:
        *     - methods: As in the extenders array, but you may specify as many methods
        *       here as you like.
        *     - file: Optionally an array specifying a file to include for a method.
        *       For each method appearing in methods a file may be specified by using
        *       the method name as key and another array as value, which describes the
        *       file to include - looking like the file array supported by 'extenders'.
        *   - import keys: (optional) Embeddable plugins may specify an array of import
        *     keys, which the plugin make use for exporting. Defaults to the upper
        *     case plugin name, thus the key 'OR' in an export triggers the creation
        *     of the 'or' plugin. Note that only uppercase values are allowed, as
        *     lower case values are treated as action or condition exports.
+       *
        * @see RulesPlugin
        * @see hook_rules_plugin_info_alter()
        */
       function hook_rules_plugin_info() {
         return array(
           'or' => array(
             'label' => t('Condition set (OR)'),
             'class' => 'RulesOr',
             'embeddable' => 'RulesConditionContainer',
             'component' => TRUE,
             'extenders' => array(
               'RulesPluginUIInterface' => array(
                 'class' => 'RulesConditionContainerUI',
               ),
             ),
           ),
           'rule' => array(
             'class' => 'Rule',
             'embeddable' => 'RulesRuleSet',
             'extenders' => array(
               'RulesPluginUIInterface' => array(
                 'class' => 'RulesRuleUI',
               ),
             ),
             'import keys' => array('DO', 'IF'),
           ),
         );
+      }
       /**
        * Declare provided rules input evaluators.
+       *
        * The hook implementation should be placed into the file MODULENAME.rules.inc,
        * which gets automatically included when the hook is invoked.
        * For implementing an input evaluator a class has to be provided which
        * extends the abstract RulesDataInputEvaluator class. Therefore the abstract
        * methods prepare() and evaluate() have to be implemented, as well as access()
        * and help() could be overridden in order to control access permissions or to
        * provide some usage help.
+       *
        * @return array
        *   An array of information about the module's provided input evaluators. The
        *   array contains a sub-array for each evaluator, with the evaluator name as
        *   the key. The name may only contain lower case alpha-numeric characters and
        *   underscores and should be prefixed with the providing module name. Possible
        *   attributes for each sub-array are:
        *   - class: The implementation class, which has to extend the
        *     RulesDataInputEvaluator class. Required.
        *   - weight: A weight for controlling the evaluation order of multiple
        *     evaluators. Required.
        *   - type: Optionally, the data types for which the input evaluator should be
        *     used. Defaults to 'text'. Multiple data types may be specified using an
        *     array.
+       *
        * @see RulesDataInputEvaluator
        * @see hook_rules_evaluator_info_alter()
        */
       function hook_rules_evaluator_info() {
         return array(
           'token' => array(
             'class' => 'RulesTokenEvaluator',
             'type' => array('text', 'uri'),
             'weight' => 0,
           ),
         );
+      }
       /**
        * Declare provided rules data processors.
+       *
        * The hook implementation should be placed into the file MODULENAME.rules.inc,
        * which gets automatically included when the hook is invoked.
        * For implementing a data processors a class has to be provided which
        * extends the abstract RulesDataProcessor class. Therefore the abstract
        * method process() has to be implemented, but also the methods form() and
        * access() could be overridden in order to provide a configuration form or
        * to control access permissions.
+       *
        * @return array
        *   An array of information about the module's provided data processors. The
        *   array contains a sub-array for each processor, with the processor name as
        *   the key. The name may only contain lower case alpha-numeric characters and
        *   underscores and should be prefixed with the providing module name, whereas
        *   'select' is reserved as well.
        *   Possible attributes for each sub-array are:
        *   - class: The implementation class, which has to extend the
        *     RulesDataProcessor class. Required.
        *   - weight: A weight for controlling the processing order of multiple data
        *     processors. Required.
        *   - type: Optionally, the data types for which the data processor should be
        *     used. Defaults to 'text'. Multiple data types may be specified using an
        *     array.
+       *
        * @see RulesDataProcessor
        * @see hook_rules_data_processor_info_alter()
        */
       function hook_rules_data_processor_info() {
         return array(
           'date_offset' => array(
             'class' => 'RulesDateOffsetProcessor',
             'type' => 'date',
             'weight' => -2,
           ),
         );
+      }
       /**
        * Alter rules compatible actions.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $actions
        *   The items of all modules as returned from hook_rules_action_info().
+       *
        * @see hook_rules_action_info()
        */
       function hook_rules_action_info_alter(&$actions) {
         // The rules action is more powerful, so hide the core action.
         unset($actions['rules_core_node_assign_owner_action']);
         // We prefer handling saving by rules - not by the user.
         unset($actions['rules_core_node_save_action']);
+      }
       /**
        * Alter rules conditions.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $conditions
        *   The items of all modules as returned from hook_rules_condition_info().
+       *
        * @see hook_rules_condition_info()
        */
       function hook_rules_condition_info_alter(&$conditions) {
         // Change conditions.
+      }
       /**
        * Alter rules events.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $events
        *   The items of all modules as returned from hook_rules_event_info().
+       *
        * @see hook_rules_event_info()
        */
       function hook_rules_event_info_alter(&$events) {
         // Change events.
+      }
       /**
        * Alter rules data types.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $data_info
        *   The items of all modules as returned from hook_rules_data_info().
+       *
        * @see hook_rules_data_info()
        */
       function hook_rules_data_info_alter(&$data_info) {
         // Change data types.
+      }
       /**
        * Alter rules plugin info.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $plugin_info
        *   The items of all modules as returned from hook_rules_plugin_info().
+       *
        * @see hook_rules_plugin_info()
        */
       function hook_rules_plugin_info_alter(&$plugin_info) {
         // Change plugin info.
+      }
       /**
        * Alter rules input evaluator info.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $evaluator_info
        *   The items of all modules as returned from hook_rules_evaluator_info().
+       *
        * @see hook_rules_evaluator_info()
        */
       function hook_rules_evaluator_info_alter(&$evaluator_info) {
         // Change evaluator info.
+      }
       /**
        * Alter rules data_processor info.
+       *
        * The implementation should be placed into the file MODULENAME.rules.inc, which
        * gets automatically included when the hook is invoked.
+       *
        * @param $processor_info
        *   The items of all modules as returned from hook_rules_data_processor_info().
+       *
        * @see hook_rules_data_processor_info()
        */
       function hook_rules_data_processor_info_alter(&$processor_info) {
         // Change processor info.
+      }
       /**
        * Act on rules configuration being loaded from the database.
+       *
        * This hook is invoked during rules configuration loading, which is handled
        * by entity_load(), via classes RulesEntityController and EntityCRUDController.
+       *
        * @param array $configs
        *   An array of rules configurations being loaded, keyed by id.
        */
       function hook_rules_config_load($configs) {
         $result = db_query('SELECT id, foo FROM {mytable} WHERE id IN(:ids)', array(':ids' => array_keys($configs)));
         foreach ($result as $record) {
           $configs[$record->id]->foo = $record->foo;
+        }
+      }
       /**
        * Respond to creation of a new rules configuration.
+       *
        * This hook is invoked after the rules configuration is inserted into the
        * the database.
+       *
        * @param RulesPlugin $config
        *   The rules configuration that is being created.
        */
       function hook_rules_config_insert($config) {
         db_insert('mytable')
           ->fields(array(
             'nid' => $config->id,
             'plugin' => $config->plugin,
           ))
           ->execute();
+      }
       /**
        * Act on a rules configuration being inserted or updated.
+       *
        * This hook is invoked before the rules configuration is saved to the
        * database.
+       *
        * @param RulesPlugin $config
        *   The rules configuration that is being inserted or updated.
        */
       function hook_rules_config_presave($config) {
         if ($config->id && $config->owner == 'your_module') {
           // Add custom condition.
           $config->conditon(/* Your condition */);
+        }
+      }
       /**
        * Respond to updates to a rules configuration.
+       *
        * This hook is invoked after the configuration has been updated in the
        * database.
+       *
        * @param RulesPlugin $config
        *   The rules configuration that is being updated.
        */
       function hook_rules_config_update($config) {
         db_update('mytable')
           ->fields(array('plugin' => $config->plugin))
           ->condition('id', $config->id)
           ->execute();
+      }
       /**
        * Respond to rules configuration deletion.
+       *
        * This hook is invoked after the configuration has been removed from the
        * database.
+       *
        * @param RulesPlugin $config
        *   The rules configuration that is being deleted.
        */
       function hook_rules_config_delete($config) {
         db_delete('mytable')
           ->condition('id', $config->id)
           ->execute();
+      }
       /**
        * Respond to rules configuration execution.
+       *
        * This hook is invoked right before the rules configuration is executed.
+       *
        * @param RulesPlugin $config
        *   The rules configuration that is being executed.
        */
       function hook_rules_config_execute($config) {
+      }
       /**
        * Define default rules configurations.
+       *
        * This hook is invoked when rules configurations are loaded. The implementation
        * should be placed into the file MODULENAME.rules_defaults.inc, which gets
        * automatically included when the hook is invoked.
+       *
        * @return array
        *   An array of rules configurations with the configuration names as keys.
+       *
        * @see hook_default_rules_configuration_alter()
        * @see hook_rules_config_defaults_rebuild()
        */
       function hook_default_rules_configuration() {
         $rule = rules_reaction_rule();
         $rule->label = 'example default rule';
         // Add rules tags.
         $rule->tags = array('Admin', 'Tag2');
         $rule->active = FALSE;
         $rule->event('node_update')
              ->condition(rules_condition('data_is', array('data:select' => 'node:status', 'value' => TRUE))->negate())
              ->condition('data_is', array('data:select' => 'node:type', 'value' => 'page'))
              ->action('drupal_message', array('message' => 'A node has been updated.'));
         $configs['rules_test_default_1'] = $rule;
         return $configs;
+      }
       /**
        * Alter default rules configurations.
+       *
        * The implementation should be placed into the file
        * MODULENAME.rules_defaults.inc, which gets automatically included when the
        * hook is invoked.
+       *
        * @param $configs
        *   The default configurations of all modules as returned from
        *   hook_default_rules_configuration().
+       *
        * @see hook_default_rules_configuration()
        */
       function hook_default_rules_configuration_alter(&$configs) {
         // Add custom condition.
         $configs['foo']->condition('bar');
+      }
       /**
        * Act after rebuilding default configurations.
+       *
        * This hook is invoked by the entity module after default rules configurations
        * have been rebuilt; i.e. defaults have been saved to the database.
+       *
        * @param array $rules_configs
        *   The array of default rules configurations which have been inserted or
        *   updated, keyed by name.
        * @param array $originals
        *   An array of original rules configurations keyed by name; i.e. the rules
        *   configurations before the current defaults have been applied. For inserted
        *   rules configurations no original is available.
+       *
        * @see hook_default_rules_configuration()
        * @see entity_defaults_rebuild()
        */
       function hook_rules_config_defaults_rebuild($rules_configs, $originals) {
         // Once all defaults have been rebuilt, update all i18n strings at once. That
         // way we build the rules cache once the rebuild is complete and avoid
         // rebuilding caches for each updated rule.
         foreach ($rules_configs as $name => $rule_config) {
           if (empty($originals[$name])) {
             rules_i18n_rules_config_insert($rule_config);
+          }
           else {
             rules_i18n_rules_config_update($rule_config, $originals[$name]);
+          }
+        }
+      }
       /**
        * Alter rules components before execution.
+       *
        * This hooks allows altering rules components before they are cached for later
        * re-use. Use this hook only for altering the component in order to prepare
        * re-use through rules_invoke_component() or the provided condition/action.
        * Note that this hook is only invoked for any components cached for execution,
        * but not for components that are programmatically created and executed on the
        * fly (without saving them).
+       *
        * @param $plugin
        *   The name of the component plugin.
        * @param $component
        *   The component that is to be cached.
+       *
        * @see rules_invoke_component()
        */
       function hook_rules_component_alter($plugin, RulesPlugin $component) {
+      }
       /**
        * Alters event sets.
+       *
        * This hooks allows altering rules event sets, which contain all rules that are
        * triggered upon a specific event. Rules internally caches all rules associated
        * to an event in an event set, which is cached for fast evaluation. This hook
        * is invoked just before any event set is cached, thus it allows altering of
        * the to be executed rules without the changes to appear in the UI, e.g. to add
        * a further condition to some rules.
+       *
        * @param $event_name
        *   The name of the event.
        * @param $event_set
        *   The event set that is to be cached.
+       *
        * @see rules_invoke_event()
        */
       function hook_rules_event_set_alter($event_name, RulesEventSet $event_set) {
+      }
       /**
        * D6 to D7 upgrade procedure hook for mapping action or condition names.
+       *
        * If for a module the action or condition name changed since Drupal 6, this
        * "hook" can be implemented in order to map to the new name of the action or
        * condition.
+       *
        * This is no real hook, but a callback that is invoked for each Drupal 6
        * action or condition that is to be upgraded to Drupal 7. E.g. the function
        * name called for the action "rules_action_set_node_title" would be
        * "rules_action_set_node_title_upgrade_map_name".
+       *
        * @param $element
        *   The element array of a configured condition or action which is to be
        *   upgraded.
+       *
        * @return string
        *   The name of the action or condition which should be used.
        */
       function hook_rules_action_base_upgrade_map_name($element) {
         return 'data_set';
+      }
       /**
        * D6 to D7 upgrade process hook for mapping action or condition configuration.
+       *
        * During upgrading Drupal 6 rule configurations to Drupal 7 Rules is taking
        * care of upgrading the configuration of all known parameters, which only works
        * if the parameter name has not changed.
        * If something changed, this callback can be used to properly apply the
        * configuration of the Drupal 6 action ($element) to the Drupal 7 version
        * ($target).
+       *
        * This is no real hook, but a callback that is invoked for each Drupal 6
        * action or condition that is to be upgraded to Drupal 7. E.g. the function
        * name called for the action "rules_action_set_node_title" would be
        * "rules_action_set_node_title_upgrade".
+       *
        * @param $element
        *   The element array of a configured condition or action which is to be
        *   upgraded.
        * @param $target
        *   The Drupal 7 version of the configured element.
+       *
        * @see hook_rules_element_upgrade_alter()
        */
       function hook_rules_action_base_upgrade($element, RulesPlugin $target) {
         $target->settings['data:select'] = $element['#settings']['#argument map']['node'] . ':title';
         $target->settings['value'] = $element['#settings']['title'];
+      }
       /**
        * D6 to D7 upgrade process hook for mapping action or condition configuration.
+       *
        * A alter hook that is called after the action/condition specific callback for
        * each element of a configuration that is upgraded.
+       *
        * @param $element
        *   The element array of a configured condition or action which is to be
        *   upgraded.
        * @param $target
        *   The Drupal 7 version of the configured element.
+       *
        * @see hook_rules_action_base_upgrade()
        */
       function hook_rules_element_upgrade_alter($element, $target) {
+      }
       /**
        * Allows modules to alter or to extend the provided Rules UI.
+       *
        * Use this hook over the regular hook_menu_alter() as the Rules UI is re-used
        * and embedded by modules. See rules_ui().
+       *
        * @param $items
        *   The menu items to alter.
        * @param $base_path
        *   The base path of the Rules UI.
        * @param $base_count
        *   The count of the directories contained in the base path.
        */
       function hook_rules_ui_menu_alter(&$items, $base_path, $base_count) {
         $items[$base_path . '/manage/%rules_config/schedule'] = array(
           'title callback' => 'rules_get_title',
           'title arguments' => array('Schedule !plugin "!label"', $base_count + 1),
           'page callback' => 'drupal_get_form',
           'page arguments' => array('rules_scheduler_schedule_form', $base_count + 1, $base_path),
           'access callback' => 'rules_config_access',
           'access arguments' => array('update', $base_count + 1),
           'file' => 'rules_scheduler.admin.inc',
           'file path' => drupal_get_path('module', 'rules_scheduler'),
         );
+      }
       /**
        * Control access to Rules configurations.
+       *
        * Modules may implement this hook if they want to have a say in whether or not
        * a given user has access to perform a given operation on a Rules
        * configuration.
+       *
        * @param string $op
        *   The operation being performed. One of 'view', 'create', 'update' or
        *   'delete'.
        * @param $rules_config
        *   (optional) A Rules configuration to check access for. If nothing is given,
        *   access for all Rules configurations is determined.
        * @param $account
        *   (optional) The user to check for. If no account is passed, access is
        *   determined for the current user.
+       *
        * @return bool|null
        *   Return TRUE to grant access, FALSE to explicitly deny access. Return NULL
        *   or nothing to not affect the operation.
        *   Access is granted as soon as a module grants access and no one denies
        *   access. Thus if no module explicitly grants access, access will be denied.
+       *
        * @see rules_config_access()
        */
       function hook_rules_config_access($op, $rules_config = NULL, $account = NULL) {
         // Instead of returning FALSE return nothing, so others still can grant
         // access.
         if (isset($rules_config) && $rules_config->owner == 'mymodule' && user_access('my modules permission')) {
           return TRUE;
+        }
+      }
       /**
        * @}
        */

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