     - returns:
         Receiver instance for support of chain calls.
     */
+    @discardableResult
     public func onSwipeUp(_ block: @escaping SNSwipeGestureRecognizerHandlerBlock) -> UIView {
         /*
          * Create gesture recognizer instance.

    - returns:
        Receiver instance for support of chain calls.
    */
    public func onTap(_ block: @escaping SNTapGestureRecognizerHandlerBlock, configureTapGestureRecognizer: SNTapGestureRecognizerConfigurationBlock) -> UIView {
        /*
         * Create gesture recognizer instance.

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