void (@NotNull VirtualFile file) { VfsUtilCore.visitChildrenRecursively(file, new VirtualFileVisitor<Void>() { private PackageDependenciesNode parent; @Override public boolean visitFile(@NotNull VirtualFile file) { if (file.isDirectory()) { parent = null; } else { parent = buildFileNode(file, parent); } return true; } @Override public void afterChildrenVisited(@NotNull VirtualFile file) { if (file.isDirectory()) { parent = null; } } }); }