public function getFieldId()
    {
        if (isset($this->_data['gtap_id_app_field']) && $this->_data['gtap_id_app_field']) {
            return FieldsDefinition::makeKey(
                    FieldMaintenanceModel::APPOINTMENTS_NAME,
                    $this->_data['gtap_id_app_field']
                    );
        }
    }
public function getFieldId()
    {
        if (isset($this->_data['gtap_id_app_field']) && $this->_data['gtap_id_app_field']) {
            return FieldsDefinition::makeKey(
                    FieldMaintenanceModel::APPOINTMENTS_NAME,
                    $this->_data['gtap_id_app_field']
                    );
        }
    }
public function getFieldId ( ) { if ( isset ( $ this -> _data [ 'gtap_id_app_field' ] ) && $ this -> _data [ 'gtap_id_app_field' ] ) { return FieldsDefinition :: makeKey ( FieldMaintenanceModel :: APPOINTMENTS_NAME , $ this -> _data [ 'gtap_id_app_field' ] ) ; } }
The field id as it is recognized be the track engine

@return string
The field id as it is recognized be the track engine