def METHOD_NAME():
    metres = ggrid.Units.METRES
    feet = ggrid.Units.FEET
    cm = ggrid.Units.CM
    assert metres.conversion_factor(metres) == 1.0
    assert metres.conversion_factor(cm) == 100
    assert metres.conversion_factor(feet) == pytest.approx(3.28084)
    assert cm.conversion_factor(metres) == 1e-2
    assert cm.conversion_factor(cm) == 1.0
    assert cm.conversion_factor(feet) == pytest.approx(0.0328084)
    assert feet.conversion_factor(metres) == pytest.approx(0.3048)
    assert feet.conversion_factor(cm) == pytest.approx(30.48)
    assert feet.conversion_factor(feet) == 1.0