eventespresso / event-espresso-core

	 * @return EE_Base_Class the relation was removed from

	 */

	function remove_relation_to_term_taxonomy( $term_taxonomy ) {

		if ( !$term_taxonomy ) {

			EE_Error::add_error( sprintf( __( "No Term_Taxonomy provided which to remove from model object of type %s and id %d", "event_espresso" ), get_class( $this ), $this->ID() ), __FILE__, __FUNCTION__, __LINE__ );

			return NULL;

		}

		$term_taxonomy->set_count( $term_taxonomy->count() - 1 );

		$term_taxonomy->save();

		return $this->_remove_relation_to( $term_taxonomy, 'Term_Taxonomy' );

            $datetime = $this->get_latest_related_datetime();

            $DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;

            // verify the registration can checkin for the given DTT_ID

        } elseif (! $this->can_checkin($DTT_ID, $verify)) {

            EE_Error::add_error(

                sprintf(

                    esc_html__(

                        'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access',

                        'event_espresso'

                    ),

                    $this->ID(),

                    $DTT_ID

                ),

                __FILE__,

                __FUNCTION__,

                __LINE__

            );

            return false;

        }

        $status_paths = array(

            EE_Checkin::status_checked_never => EE_Checkin::status_checked_in,

            EE_Checkin::status_checked_in    => EE_Checkin::status_checked_out,