def METHOD_NAME(self):
    m = ConcreteModel()
    m.db = Database()
    m.fs = FlowsheetBlock(dynamic=False)
    m.fs.params = WaterParameterBlock(solute_list=["tds", "foo"])
    m.fs.unit = WAIVZO(property_package=m.fs.params, database=m.db)
    m.fs.unit.inlet.flow_mass_comp[0, "H2O"].fix(1000)
    m.fs.unit.inlet.flow_mass_comp[0, "tds"].fix(1)
    m.fs.unit.inlet.flow_mass_comp[0, "foo"].fix(1)
    return m