         bottomContainerView.addSubview(_timeSlider)
     }
     
-    fileprivate func configureBGColors() {
+    private func configureBGColors() {
         bgContainerView.backgroundColor = UIColor (red: 0.0, green: 0.0, blue: 0.0, alpha: 0.4)
         topContainerView.backgroundColor = UIColor (red: 0.0, green: 0.0, blue: 0.0, alpha: 0.5)
         bottomContainerView.backgroundColor = UIColor (red: 0.0, green: 0.0, blue: 0.0, alpha: 0.5)
     }
     
-    fileprivate func configureDelegation() {
+    private func configureDelegation() {
         configureBackButtonImage()
         configurePlayButtonNormalStateImage()
         configurePlayButtonSelectedStateImage()
         configureFullScreenButtonNormalStateImage()
     }
     
-    fileprivate func configurePlayButtonNormalStateImage() {
+    private func configurePlayButtonNormalStateImage() {
         if delegate != nil {
             _playButton.setImage(delegate?.playButtonNormalStateImage(), for: UIControlState())
         } else {

        }
    }
    
    fileprivate func setDurationLabelContraints() {
        _durationLabel.snp.makeConstraints { (make) in
            make.centerY.equalTo(_currentTimeLabel)
            make.left.equalTo(_remainingTimeLabel.snp.right).offset(0)

        }
    }
    
    private func updateSmallScreenImage() {
        if delegate != nil {
            _fullScreenButton.setImage(delegate?.fullScreenButtonImage(), for: UIControlState())
        } else {
