How to use the allure-python-commons.src.model2.ExecutableItem function in allure-python-commons

class ExecutableItem(object):
    name = attrib(default=None)
    status = attrib(default=None)
    statusDetails = attrib(default=None)
    stage = attrib(default=None)
    description = attrib(default=None)
    descriptionHtml = attrib(default=None)
    steps = attrib(default=Factory(list))
    attachments = attrib(default=Factory(list))
    parameters = attrib(default=Factory(list))
    start = attrib(default=None)
    stop = attrib(default=None)


@attrs
class TestResult(ExecutableItem):
    file_pattern = TEST_CASE_PATTERN

    uuid = attrib(default=None)
    historyId = attrib(default=None)
    testCaseId = attrib(default=None)
    fullName = attrib(default=None)
    labels = attrib(default=Factory(list))
    links = attrib(default=Factory(list))


@attrs
class TestStepResult(ExecutableItem):
    id = attrib(default=None)


@attrs

@attrs
class TestResult(ExecutableItem):
    file_pattern = TEST_CASE_PATTERN

    uuid = attrib(default=None)
    historyId = attrib(default=None)
    testCaseId = attrib(default=None)
    fullName = attrib(default=None)
    labels = attrib(default=Factory(list))
    links = attrib(default=Factory(list))


@attrs
class TestStepResult(ExecutableItem):
    id = attrib(default=None)


@attrs
class TestBeforeResult(ExecutableItem):
    pass


@attrs
class TestAfterResult(ExecutableItem):
    pass


@attrs
class Parameter(object):
    name = attrib(default=None)

labels = attrib(default=Factory(list))
    links = attrib(default=Factory(list))


@attrs
class TestStepResult(ExecutableItem):
    id = attrib(default=None)


@attrs
class TestBeforeResult(ExecutableItem):
    pass


@attrs
class TestAfterResult(ExecutableItem):
    pass


@attrs
class Parameter(object):
    name = attrib(default=None)
    value = attrib(default=None)


@attrs
class Label(object):
    name = attrib(default=None)
    value = attrib(default=None)


@attrs

def start_step(self, parent_uuid=None, uuid=None):
        parent = self._get_item(uuid=parent_uuid, item_type=ExecutableItem)
        step = TestStepResult()
        step.start = now()
        parent.steps.append(step)
        self._items[uuid or uuid4()] = step
        yield step

uuid = attrib(default=None)
    historyId = attrib(default=None)
    testCaseId = attrib(default=None)
    fullName = attrib(default=None)
    labels = attrib(default=Factory(list))
    links = attrib(default=Factory(list))


@attrs
class TestStepResult(ExecutableItem):
    id = attrib(default=None)


@attrs
class TestBeforeResult(ExecutableItem):
    pass


@attrs
class TestAfterResult(ExecutableItem):
    pass


@attrs
class Parameter(object):
    name = attrib(default=None)
    value = attrib(default=None)


@attrs
class Label(object):