         )
     }
 
-    // MARK: Gradient
+    // MARK: gradient
 
     private func addGradientToNotSelectedRange() {
         let properties = GradientProperties(

        )

        if !rangeSelected.maxValue.isNaN && !rangeSelected.maxValue.isNaN {
            delegate?.rangeChangeFinished(minValueSelected: rangeSelected.minValue,
                                          maxValueSelected: rangeSelected.maxValue,
                                          slider: self)
        }
    }
}

    // MARK: gesture

    @objc final func moveLeftKnob(gestureRecognizer: UIPanGestureRecognizer) {
        knobGestureManager.moveLeftKnob(gesture: getGestureData(gestureRecognizer: gestureRecognizer))
    }

    @objc final func moveRightKnob(gestureRecognizer: UIPanGestureRecognizer) {
        knobGestureManager.moveRightKnob(gesture: getGestureData(gestureRecognizer: gestureRecognizer))
    }

    private func getGestureData(gestureRecognizer: UIPanGestureRecognizer) -> GestureData {
        return GestureData(
            gestureRecognizer: gestureRecognizer,
            scale: scale,
            stepIncrement: stepIncrement,
            semanticContentAttribute: self.semanticContentAttribute
        )
    }

