def METHOD_NAME():
    m = pyo.ConcreteModel()
    m.s = pyo.Set(initialize=[0, 1, 2])
    m.diff = DiffVar(m.s)
    assert m.diff.ctype == DiffVar
    assert m.diff._attr == "differential"
    m.alg = AlgVar(m.s)
    assert m.alg.ctype == AlgVar
    assert m.alg._attr == "algebraic"
    m.inp = InputVar(m.s)
    assert m.inp.ctype == InputVar
    assert m.inp._attr == "input"
    m.deriv = DerivVar(m.s)
    assert m.deriv.ctype == DerivVar
    assert m.deriv._attr == "derivative"
    m.meas = MeasuredVar(m.s)
    assert m.meas.ctype == MeasuredVar
    assert m.meas._attr == "measurement"