code: function keyPressed(e){
              if (e.code === "Escape") {
                  if (this.parent !== null) {
                      var p = this.$parentMenu;
                      this.$canceled(this);
                      this.$hideMenu();
                      if (p !== null) {
                          p.requestFocus();
                      }
                  }
              } else {
                  this.$super(e);
              }
          }
docs: Override key pressed events handler to handle key events according to
  context menu component requirements
  @param  {zebkit.ui.event.KeyEvent} e a key event
  @method keyPressed