B2G/gecko/toolkit/components/osfile/osfile_shared_front.jsm
/**
   * Return the file handle.
   *
   * @throw OS.File.Error if the file has been closed.
   */
Return the file handle.
@throw OS.File.Error if the file has been closed.
Return the file handle . @throw OS . File . Error if the file has been closed .
get fd() {
    if (this._fd) {
      return this._fd;
    }
    throw OS.File.Error.closed();
  }
get fd ( ) { if ( this . _fd ) { return this . _fd ; } throw OS . File . Error . closed ( ) ; }
Return the file handle.
Return the file handle .