     - returns:
         Receiver instance for support of chain calls.
     */
+    @discardableResult
     public func onLongPressOnce(_ block: @escaping SNLongPressGestureRecognizerHandlerBlock, configureLongPressGestureRecognizer: SNLongPressGestureRecognizerConfigurationBlock) -> UIView {
         /*
          * Obtain handler block for gesture recognizer.

    - returns:
        Receiver instance for support of chain calls.
    */
    public func onLongPress(_ block: @escaping SNLongPressGestureRecognizerHandlerBlock, configureLongPressGestureRecognizer: SNLongPressGestureRecognizerConfigurationBlock) -> UIView {
        /*
         * Create gesture recognizer instance.

    - returns:
        Receiver instance for support of chain calls.
    */
    @discardableResult
    public func onPan(_ block: @escaping SNPanGestureRecognizerHandlerBlock, configurePanGestureRecognizer: SNPanGestureRecognizerConfigurationBlock) -> UIView {
        /*
         * Create gesture recognizer instance.
