code: function (filePath) {
                      var
                          me = this,
                          extName = _path.extname(filePath).toLowerCase(),
                          size,
                          stream;
                      _fs.stat(filePath, function (err, stats) {
                          var mimeType;
                          if (err) {
                              me._response.plain(500,
                                  "Unable to access file (" + err + ")");
                              return;
                          }
                          if (stats.isDirectory()) {
                              me._response.plain(200, "Directory.");
                              return;
                          } else if (!stats.isFile()) {
                              me._response.plain(200, "Not a file.");
                              return;
                          }
                          size = stats.size;
                          mimeType = gpf.http.getMimeType(extName);
                          if (me._options.verbose) {
                              console.log("\tMime type  : " + mimeType);
                              console.log("\tFile size  : " + size);
                          }
                          me._response.writeHead(200, {
                              "content-type": mimeType,
                              "content-length": size
                          });
                          stream = _fs.createReadStream(filePath);
                          //stream.on("data", function (chunk) {
                          //    if (!me._response.write(chunk)) {
                          //        stream.pause();
                          //        me._response.once("drain", function () {
                          //            stream.resume();
                          //        });
                          //    }
                          //});
                          stream.on("end", function () {
                              if (me._options.verbose) {
                                  console.log("\tEnd      t+: "
                                  + ((new Date()) - me._startTimeStamp)
                                  + "ms");
                              }
                              me._response.statusCode = 200;
                              me._response.end();
                          });
                          stream.pipe(me._response);
                      });
                  }
docs: Generates a response that contains the specified file
  
  @param {String} filePath
  @private