public @NotNull PackageDependenciesNode getFileParentNode(VirtualFile file) {
    LOG.assertTrue(file != null);
    final VirtualFile containingDirectory = file.getParent();
    return getModuleDirNode(containingDirectory, myFileIndex.getModuleForFile(file), null);
  }
public @NotNull PackageDependenciesNode getFileParentNode(VirtualFile file)