static @NotNull IndexingStampInfo calculateIndexingStamp(@NotNull FileContent content) {
    VirtualFile file = content.getFile();
    boolean isBinary = file.getFileType().isBinary();
    int contentLength = isBinary ? -1 : content.getPsiFile().getTextLength();
    long byteLength = file.getLength();

    return new IndexingStampInfo(file.getTimeStamp(), byteLength, contentLength, isBinary);
  }
static @NotNull IndexingStampInfo calculateIndexingStamp(@NotNull FileContent content)