void storeSymlinkTarget(int fileId,
                          @Nullable String symlinkTarget) {
    try {
      checkNotClosed();
      connection.markDirty();
      try (DataOutputStream stream = writeAttribute(fileId, SYMLINK_TARGET_ATTRIBUTE)) {
        IOUtil.writeUTF(stream, StringUtil.notNullize(symlinkTarget));
      }
    }
    catch (IOException e) {
      throw handleError(e);
    }
  }
void storeSymlinkTarget(int fileId,
                          @Nullable String symlinkTarget)