old_contents: function GraphicsManager() {
      this.div;
  }
  
  GraphicsManager.prototype.setContainer = function(containerId) {
      console.log(containerId);
      this.div = document.getElementById(containerId);
  }
  
  GraphicsManager.prototype.initialize = function() {
      this.div.innerText = 'GraphicsManager.initialize()';
  }
new_contents: function GraphicsManager() {
      this.div;
  }
  
  GraphicsManager.prototype.setContainer = function(containerId) {
      this.div = document.getElementById(containerId);
  }
  
  GraphicsManager.prototype.initialize = function() {
      this.div.innerText = 'GraphicsManager.initialize()';
  }
subject: Remove unwanted log statement.