def METHOD_NAME(self):
    function_list = [
        "_PartialWrapper",
        "_with_args",
        "_with_callable_args",
        "ABC",
        "ObserverBase",
        "_ObserverBase",
        "MinMaxObserver",
        "MovingAverageMinMaxObserver",
        "PerChannelMinMaxObserver",
        "MovingAveragePerChannelMinMaxObserver",
        "HistogramObserver",
        "PlaceholderObserver",
        "RecordingObserver",
        "NoopObserver",
        "_is_activation_post_process",
        "_is_per_channel_script_obs_instance",
        "get_observer_state_dict",
        "load_observer_state_dict",
        "default_observer",
        "default_placeholder_observer",
        "default_debug_observer",
        "default_weight_observer",
        "default_histogram_observer",
        "default_per_channel_weight_observer",
        "default_dynamic_quant_observer",
        "default_float_qparams_observer",
    ]
    self._test_function_import('observer', function_list)