code: def test_tree_depth_limit(self):
      # The causal dashboard requires that this constant be no
      # greater than 2 in order to correctly display the
      # policy tree chart
      assert DefaultParams.DEFAULT_MAX_TREE_DEPTH == 2
  
label_desc: Use image node_id 1 for calling the TestCausalConstants obj's underlying member method code with example usage: obj.test_tree_depth_limit() without return types