@Nullable
  static LanguageCompilerRefAdapter findAdapter(@NotNull VirtualFile file, boolean includeExternalLanguageHelper) {
    final FileType fileType = file.getFileType();
    return findAdapter(fileType, includeExternalLanguageHelper);
  }
@Nullable
  static LanguageCompilerRefAdapter findAdapter(@NotNull VirtualFile file, boolean includeExternalLanguageHelper)