private static @NotNull Collection<VirtualFile> getExcludedPaths(@NotNull Sdk sdk) {
    final PythonSdkAdditionalData pythonAdditionalData = PyUtil.as(sdk.getSdkAdditionalData(), PythonSdkAdditionalData.class);
    return pythonAdditionalData != null ? pythonAdditionalData.getExcludedPathFiles() : Collections.emptyList();
  }
private static @NotNull Collection<VirtualFile> getExcludedPaths(@NotNull Sdk sdk)