static void processChange(ContentRevision contentRevisionBefore,
                              ContentRevision contentRevisionAfter, FileStatus fileStatus,
                              ChangelistBuilder builder, VcsKey vcsKey) {
      if (contentRevisionBefore == null && contentRevisionAfter == null) {
        return;
      }
      builder.processChange(
        new Change(contentRevisionBefore, contentRevisionAfter, fileStatus),
        vcsKey
      );
    }
static void processChange(ContentRevision contentRevisionBefore,
                              ContentRevision contentRevisionAfter, FileStatus fileStatus,
                              ChangelistBuilder builder, VcsKey vcsKey)