How to use the pyinstrument.processors.remove_unnecessary_self_time_nodes function in pyinstrument

self_time=0.5,
            ),
            Frame(
                identifier='strip_newlines\x00cibuildwheel/utils.py\x00997',
                self_time=0.5,
            ),
            Frame(
                identifier='calculate_metrics\x00cibuildwheel/utils.py\x007',
                self_time=0.1,
            ),
        ]
    )

    assert frame.time() == approx(1.3)

    frame = processors.remove_unnecessary_self_time_nodes(frame, options={})

    assert frame.time() == approx(1.3)
    assert len(frame.children) == 4
    # check the self time node was deleted
    strip_newlines_frame = frame.children[0]
    assert strip_newlines_frame.function == 'strip_newlines'
    assert len(strip_newlines_frame.children) == 0
    assert strip_newlines_frame.self_time == 0.2

def default_processors(self):
        return [
            processors.remove_importlib,
            processors.merge_consecutive_self_time,
            processors.aggregate_repeated_calls,
            processors.group_library_frames_processor,
            processors.remove_unnecessary_self_time_nodes,
            processors.remove_irrelevant_nodes,
        ]

def default_processors(self):
        return [
            processors.remove_importlib,
            processors.merge_consecutive_self_time,
            processors.aggregate_repeated_calls,
            processors.group_library_frames_processor,
            processors.remove_unnecessary_self_time_nodes,
            processors.remove_irrelevant_nodes,
        ]

def default_processors(self):
        return [
            processors.remove_importlib,
            processors.merge_consecutive_self_time,
            processors.aggregate_repeated_calls,
            processors.group_library_frames_processor,
            processors.remove_unnecessary_self_time_nodes,
            processors.remove_irrelevant_nodes,
        ]