docs: function(features) {
          var name;
          if(OpenLayers.Util.isArray(features)) {
              name = "featureMembers";
          } else {
              name = "featureMember";
          }
          var root = this.writeNode("gml:" + name, features);
          this.setAttributeNS(
              root, this.namespaces["xsi"],
              "xsi:schemaLocation", this.schemaLocation
          );
  
          return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
      }