/**
  * Returns the field output.
  * 
  * @since       3.0.0
  * @internal
  */
 protected function getFieldOutput($aField)
 {
     /* Since meta box fields don't have the `option_key` key which is required to compose the name attribute in the regular pages. */
     $_sOptionKey = $this->_getOptionKey();
     $aField['option_key'] = $_sOptionKey ? $_sOptionKey : null;
     $aField['page_slug'] = isset($_GET['page']) ? $_GET['page'] : '';
     // set an empty string to make it yield true for isset() so that saved options will be checked.
     return parent::getFieldOutput($aField);
 }
 protected function getFieldOutput($aField)
 {
     $aField['option_key'] = $this->_getOptionKey();
     $aField['page_slug'] = $this->oProp->getCurrentPageSlug();
     return parent::getFieldOutput($aField);
 }
 protected function getFieldOutput($aField)
 {
     $_sOptionKey = $this->_getOptionKey();
     $aField['option_key'] = $_sOptionKey ? $_sOptionKey : null;
     $aField['page_slug'] = isset($_GET['page']) ? $_GET['page'] : '';
     return parent::getFieldOutput($aField);
 }