code: public static String transferURLStream(String strURL, String strFilename, Reader in)
      {
          return Utility.transferURLStream(strURL, strFilename, in, null);
      }
docs: Transfer the data stream from this URL to a string or file.
  @param strURL The URL to read.
  @param strFilename If non-null, create this file and send the URL data here.
  @param strFilename If null, return the stream as a string.
  @param in If this is non-null, read from this input source.
  @return The stream as a string if filename is null.