public function register() {
		$series_post_type_name = Series::POSTTYPE;
		$event_post_type       = TEC::POSTTYPE;

		if ( ! has_action( 'delete_post', [ $this, 'remove_series_relationships' ] ) ) {
			add_action( 'delete_post', [ $this, 'remove_series_relationships' ], 10 );
		}

		if ( ! has_action( 'wp_trash_post', [ $this, 'trash_autogenerated_series' ] ) ) {
			add_action( 'wp_trash_post', [ $this, 'trash_autogenerated_series' ] );
		}

		if ( ! has_action( 'delete_post', [ $this, 'delete_autogenerated_series' ], 5, 2 ) ) {
			add_action( 'delete_post', [ $this, 'delete_autogenerated_series' ], 5, 2 );
		}

		if ( ! has_action( "save_post_{$series_post_type_name}", [ $this, 'remove_series_autogenerated_flag' ] ) ) {
			add_action( "save_post_{$series_post_type_name}", [ $this, 'remove_series_autogenerated_flag' ], 10, 2 );
		}

		if ( ! has_action( "save_post_{$series_post_type_name}", [ $this, 'snapshot_new_series_state' ] ) ) {
			add_action( "save_post_{$series_post_type_name}", [ $this, 'snapshot_new_series_state' ], 20, 3 );
		}

		if ( ! has_action( "save_post_{$series_post_type_name}", [ $this, 'save_series_relationship' ] ) ) {
			add_action( "save_post_{$series_post_type_name}", [ $this, 'save_series_relationship' ], 10, 2 );
		}

		if ( ! has_action( 'untrashed_post', [ $this, 'untrash_series_following_event' ] ) ) {
			add_action( 'untrashed_post', [ $this, 'untrash_series_following_event' ] );
		}

		if ( ! has_action( "save_post_{$series_post_type_name}", [ $this, 'save_show_series_title' ] ) ) {
			add_action( "save_post_{$series_post_type_name}", [ $this, 'save_show_series_title' ] );
		}

		if ( ! has_filter( 'tribe_events_register_default_linked_post_types', [
			$this,
			'register_series_linked_post_type'
		] ) ) {
			add_filter( 'tribe_events_register_default_linked_post_types', [
				$this,
				'register_series_linked_post_type'
			] );
		}

		add_filter( 'tribe_events_community_allowed_event_fields', [ $this, 'register_events_to_series_request_key' ] );

		if ( ! has_action( "transition_post_status", [ $this, 'update_series_post_status' ] ) ) {
			add_action( "transition_post_status", [ $this, 'update_series_post_status' ], 10,3 );
		}

		$this->container->register( Base::class );
		$this->container->register( Modifications::class );
		$this->container->register( Theme_Compatibility::class );
	}