code: def test_tree_parallel_map():
      assert tree_utils.parallel_map(
          lambda x: x * 10, {"a": [1, 2, 3], "b": [4, 5]}
      ) == {"a": [10, 20, 30], "b": [40, 50]}
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_tree_parallel_map() without return types