def METHOD_NAME(onnx_graph: ONNXGraph):
    matches = get_structural_matches(onnx_graph, op_type="Conv")
    assert len(matches) == 0
    matches = get_structural_matches(onnx_graph, op_type="Identity")
    assert list(map(str, matches)) == [
        "MatchResult(node='id1', parents=[], children=[])",
        "MatchResult(node='id2', parents=[], children=[])",
    ]
    matches = get_structural_matches(onnx_graph, op_type="Add")
    assert list(map(str, matches)) == [
        "MatchResult(node='add1', parents=[], children=[])",
        "MatchResult(node='add2', parents=[], children=[])",
    ]