def METHOD_NAME():
    testing.init_blank_db_for_testing()
    generator = tangos.testing.simulation_generator.SimulationGeneratorForTests()
    ts1 = generator.add_timestep()
    generator.add_objects_to_timestep(2)
    ts2 = generator.add_timestep()
    generator.add_objects_to_timestep(1)
    generator.link_last_halos_using_mapping({1:1, 2:1})
    _setup_dummy_histogram_data(ts1, ts2)