code: function allNodesAtLocation(location) {
          var nodes = [];
          exports.root.each(function each(n) {
              if (n.type === DOMNode.TYPE_ELEMENT && n.isAtLocation(location)) {
                  nodes.push(n);
              }
          });
          return nodes;
      }
docs: Get the element node that encloses the given location
  @param {location}