code: public static File leftShift(File file, InputStream data) throws IOException {
          append(file, data);
          return file;
      }
docs: Append binary data to the file.  See {@link #append(java.io.File, java.io.InputStream)}
  
  @param file a File
  @param data an InputStream of data to write to the file
  @return the file
  @throws IOException if an IOException occurs.
  @since 1.5.0