boolean (@NotNull VirtualFile fileOrDir) { ReadAction.run(() -> { if (!fileOrDir.isDirectory()) { if (lastParent != null && !Comparing.equal(dir, fileOrDir.getParent())) { lastParent = null; } lastParent = buildFileNode(fileOrDir, lastParent); dir = fileOrDir.getParent(); } else { lastParent = null; } }); return true; }