public long updateLongField(@NotNull VirtualFile vFile,
                              int fieldOffset,
                              @NotNull LongUnaryOperator updateOperator) throws IOException {
    int fileId = extractFileId(vFile);
    return updateLongField(fileId, fieldOffset, updateOperator);
  }
public long updateLongField(@NotNull VirtualFile vFile,
                              int fieldOffset,
                              @NotNull LongUnaryOperator updateOperator)