code: function(event, element, elementType) {
  
  			if (elementType === 'edit-input') {
  				var todoEl = getClosestTodoElement(element);
  
  				if (event.keyCode === ENTER_KEY) {
  					this.saveLabel(todoEl);
  					this.hideEditor(todoEl);
  				} else if (event.keyCode === ESCAPE_KEY) {
  					this.hideEditor(todoEl);
  				}
  
  			}
  
  		}
docs: Handles keydown events for the behavior.
  @param {Event} event A DOM-normalized event object.
  @param {HTMLElement} element The nearest HTML element with a data-type
  attribute specified or null if there is none.
  @param {string} elementType The value of data-type for the nearest
  element with that attribute specified or null if there is none.
  @returns {void}