def METHOD_NAME(self, x, u, dt):
    xs = [m.METHOD_NAME(m.StateContainer(x), m.InputContainer(u), dt) for m in self.parameters['models']]
    xs_final = {}
    for x in xs:
        for key in x.keys():
            if key in xs_final:
                xs_final[key].append(x[key])
            else:
                xs_final[key] = [x[key]]
    for key in xs_final.keys():
        xs_final[key] = self.parameters['aggregation_method'](xs_final[key])
    return self.StateContainer(xs_final)