code: function (node) {
  
          var toberemoved = this.handler[node];
          this.handler[node] = [];
  
          // remove handler
          if (toberemoved && toberemoved.length > 0) {
              for (var i = 0, l = toberemoved.length; i < l; i++) {
                  this._connection.deleteHandler(toberemoved[i])
              }
          }
      }
docs: *Function
  
  Parameters:
  (String) node - The name of node