option_2=StrOption(name="var1",doc="a second variable",multi=True,default=["a","b","c"],default_multi="a",properties=frozenset({"mandatory","standard"}),informations={'type':'string'})
option_3=ChoiceOption(name="var2",doc="a first variable",values=Calculation(func['calc_value'],Params((ParamOption(option_2)))),default="a",properties=frozenset({"mandatory","standard"}),informations={'type':'choice'})