public static void markUnknownFileTypeAsPlainTextIfNeeded(@Nullable Project project, @NotNull VirtualFile file) {
    if (project != null && !project.isDefault() && !LightEdit.owns(project)) {
      return;
    }
    if (isLightEditEnabled()) {
      LightEditFileTypeOverrider.markUnknownFileTypeAsPlainText(file);
    }
  }
public static void markUnknownFileTypeAsPlainTextIfNeeded(@Nullable Project project, @NotNull VirtualFile file)