code: def test_default_graph_steps(
      processing_step_name: str,
      children: list[str],
      parents: list[str],
      ancestors: list[str],
  ) -> None:
      assert_step(
          processing_graph,
          processing_step_name,
          children=children,
          parents=parents,
          ancestors=ancestors,
      )
  
imports: import pytest
  from libcommon.processing_graph import ProcessingGraph, ProcessingGraphSpecification, ProcessingStep, processing_graph
label_desc: Use image node_id 4 for calling a global function with example usage: test_default_graph_steps(processing_step_name, children, parents, ancestors) without return types