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

        addConstraintsToComponents()
    }
    
    fileprivate func configureBGContainerView() {
        bgContainerView.addSubview(topContainerView)
        bgContainerView.addSubview(bottomContainerView)
        bgContainerView.addSubview(_playButton)
    }
    
    fileprivate func configureTopContainerView() {
        topContainerView.addSubview(_backButton)
        topContainerView.addSubview(_titleLabel)
        topContainerView.addSubview(_fullScreenButton)
    }
    
    fileprivate func configureBottomContainerView() {
        bottomContainerView.addSubview(_currentTimeLabel)
        bottomContainerView.addSubview(_remainingTimeLabel)
        bottomContainerView.addSubview(_durationLabel)

        }
    }
    
    private func setCurrentLabelConstraints() {
        _currentTimeLabel.snp.makeConstraints { (make) in
            make.left.equalTo(bottomContainerView.snp.left).offset(10)
            make.centerY.equalTo(bottomContainerView)
