@SuppressWarnings("DeprecatedIsStillUsed")
  @Deprecated
  public Collection<VirtualFile> requestWriting(VirtualFile @NotNull ... files) {
    throw new AbstractMethodError("requestWriting(List<VirtualFile>) not implemented");
  }
@SuppressWarnings("DeprecatedIsStillUsed")
  @Deprecated
  public Collection<VirtualFile> requestWriting(VirtualFile @NotNull ... files)