def METHOD_NAME(base="ion"):
    m = ConcreteModel()
    m.fs = FlowsheetBlock(dynamic=False)
    property_models.build_prop(m, base=base)
    build_SepNF(m, base=base)
    property_models.specify_feed(m.fs.NF.mixed_state[0], base=base)
    m.fs.NF.mixed_state[0].mass_frac_phase_comp  # touching for tests
    check_dof(m)
    calculate_scaling_factors(m)
    solve_block(m)
    m.fs.NF.inlet.display()
    m.fs.NF.permeate.display()
    m.fs.NF.retentate.display()
    return m