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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fake_nearby_preprocessor(impact_function):
 """Fake nearby preprocessor. We can put here the function to generate contours or nearby places. It must return a layer with a specific layer_purpose. :return: The output layer. :rtype: QgsMapLayer """

    _ = impact_function  # NOQA
    from safe.test.utilities import load_test_vector_layer
    fake_layer = load_test_vector_layer(
        'gisv4',
        'impacts',
        'building-points-classified-vector.geojson',
        clone_to_memory=True)
    return fake_layer