docs: function Controls(options) {
          this.options = options;
  
          /**
           * ### Controls.listRoot
           *
           * The list which holds the controls
           */
          this.listRoot = null;
  
          /**
           * ### Controls.submit
           *
           * The submit button
           */
          this.submit = null;
  
          /**
           * ### Controls.changeEvent
           *
           * The event to be fired when the list changes
           */
          this.changeEvent = 'Controls_change';
  
          /**
           * ### Controls.hasChanged
           *
           * Flag to indicate whether the list has changed
           */
          this.hasChanged = false;
      }