code: function(node) {
              var nodeList = this.getElementsByTagNameNS(node, this.gmlns,
                                                         "LineString");
              var components = [];
              if(nodeList.length > 0) {
                  var line;
                  for(var i=0; i<nodeList.length; ++i) {
                      line = this.parseGeometry.linestring.apply(this,
                                                                 [nodeList[i]]);
                      if(line) {
                          components.push(line);
                      }
                  }
              }
              return new OpenLayers.Geometry.MultiLineString(components);
          }
docs: Method: parseGeometry.multilinestring
  Given a GML node representing a multilinestring geometry, create an
  OpenLayers multilinestring geometry.
  
  Parameters:
  node - {DOMElement} A GML node.
  
  Returns:
  {<OpenLayers.Geometry.MultiLineString>} A multilinestring geometry.