code: function (node, property, recursive, listeners) {
          // add property specific recursive listeners
          listeners = __appendListeners(node[__getListenerMetaName(property, true)], listeners);
          if (!recursive) {
              // add property specific non-recursive listeners
              listeners = __appendListeners(node[__getListenerMetaName(property)], listeners);
          }
          return listeners;
      }
docs: Retrieve property-specific listeners (both recursive and non recursive) on this node.
  @private
  @param {Object} node
  @param {String} property
  @param {Boolean} recursive
  @param {Array} listeners