@NotNull
  private TextFilePatch buildDeletedFile(@NotNull AirContentRevision beforeRevision) throws VcsException {
    TextFilePatch result = buildPatchHeading(beforeRevision, beforeRevision);
    result.setFileStatus(FileStatus.DELETED);
    String content = beforeRevision.getContentAsString();
    if (!content.isEmpty()) {
      result.addHunk(createWholeFileHunk(content, false, false));
    }
    return result;
  }
@NotNull
  private TextFilePatch buildDeletedFile(@NotNull AirContentRevision beforeRevision)