private boolean canContainTodoItems(PsiFile psiFile) {
    ApplicationManager.getApplication().assertWriteIntentLockAcquired();
    VirtualFile vFile = psiFile.getVirtualFile();
    return myFileTree.contains(vFile) || myDirtyFileSet.contains(vFile);
  }
private boolean canContainTodoItems(PsiFile psiFile)