def METHOD_NAME(build_phase_separator):
    state_args_water_steam = {
        "flow_mol": 1.5e5,  # mol/s
        "pressure": 1.2e7,  # Pa
        "enth_mol": 28365.2608,
    }  # j/mol
    initialization_tester(
        build_phase_separator, dof=3, state_args_water_steam=state_args_water_steam
    )