def METHOD_NAME(model):
    rvs_state = model.rvs()
    assert isinstance(rvs_state[0, 0], Bearing)
    assert not isinstance(rvs_state[1, 0], Bearing)
    assert isinstance(rvs_state[2, 0], Bearing)
    assert not isinstance(rvs_state[3, 0], Bearing)
    assert rvs_state.shape == (4, 1)
    assert isinstance(rvs_state, StateVector)
    rvs_state = model.rvs(10)
    assert rvs_state.shape == (4, 10)
    assert all(isinstance(state, Bearing) for state in rvs_state[0])
    assert all(not isinstance(state, Bearing) for state in rvs_state[1])
    assert all(isinstance(state, Bearing) for state in rvs_state[2])
    assert all(not isinstance(state, Bearing) for state in rvs_state[3])