public function attendee_registered_for_event( $em_booking_obj ) {
		$em_event_id        = $em_booking_obj->event_id;
		$user_id            = $em_booking_obj->person_id;
		$recipes            = Automator()->get->recipes_from_trigger_code( $this->trigger_code );
		$required_event     = Automator()->get->meta_from_recipes( $recipes, $this->trigger_meta );
		$matched_recipe_ids = array();
		foreach ( $recipes as $recipe_id => $recipe ) {
			foreach ( $recipe['triggers'] as $trigger ) {
				$trigger_id = $trigger['ID'];//return early for all products
				if ( isset( $required_event[ $recipe_id ][ $trigger_id ] ) ) {
					if ( absint( $required_event[ $recipe_id ][ $trigger_id ] ) === absint( $em_event_id ) || intval( '-1' ) === intval( $required_event[ $recipe_id ][ $trigger_id ] ) ) {
						$matched_recipe_ids[] = array(
							'recipe_id'  => $recipe_id,
							'trigger_id' => $trigger_id,
						);
					}
				}
			}
		}
		if ( ! empty( $matched_recipe_ids ) ) {
			foreach ( $matched_recipe_ids as $matched_recipe_id ) {
				$pass_args = array(
					'code'             => $this->trigger_code,
					'meta'             => $this->trigger_meta,
					'user_id'          => $user_id,
					'recipe_to_match'  => $matched_recipe_id['recipe_id'],
					'trigger_to_match' => $matched_recipe_id['trigger_id'],
					'ignore_post_id'   => true,
				);
				$args = Automator()->maybe_add_trigger_entry( $pass_args, false );
				if ( $args ) {
					foreach ( $args as $result ) {
						if ( true === $result['result'] ) {
							Em_Tokens::em_save_tokens( $this->trigger_meta, $result['args'], $em_booking_obj );
							Automator()->maybe_trigger_complete( $result['args'] );
						}
					}
				}
			}
		}
	}