def from_native_return(self, typ, val, env_manager):
    assert (not isinstance(typ, types.Optional)), 'callconv should have prevented the return of optional value'
    out = self.from_native_value(typ, val, env_manager)
    return out
def from_native_return(self, typ, val, env_manager):
    assert (not isinstance(typ, types.Optional)), 'callconv should have prevented the return of optional value'
    out = self.from_native_value(typ, val, env_manager)
    return out