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    // Let the handlers interact with each other if they really want.

    $this->_pre_query();

    if ($this->display_handler->uses_exposed()) {

      $exposed_form = $this->display_handler->get_plugin('exposed_form');

      // (1) Record the errors before rendering the exposed form widgets.

    $this->style_plugin->query($this->display_handler->use_group_by());

    // Allow exposed form to affect the query.

      $exposed_form->query();

    }