      - Returns: A CABasicAnimation.
      */
     static func shadow(color: UIColor) -> CABasicAnimation {
-        return MotionCAAnimation.createAnimation(keyPath: .shadowColor, toValue: color.cgColor)
+        return createAnimation(keyPath: .shadowColor, toValue: color.cgColor)
     }
     
     /**

     - Returns: A CABasicAnimation.
     */
    static func height(_ height: CGFloat) -> CABasicAnimation {
        return MotionCAAnimation.createAnimation(keyPath: .height, toValue: NSNumber(floatLiteral: Double(height)))
    }
    
    /**

     - Returns: A CABasicAnimation.
     */
    static func shadow(opacity: Float) -> CABasicAnimation {
        return createAnimation(keyPath: .shadowOpacity, toValue: NSNumber(floatLiteral: Double(opacity)))
    }
    
    /**
