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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def validate_callback_data(method):
 """ wraps a callback's method to pull the desired arguments from the vars dict also checks to ensure the method's arguments are in the vars dict Parameters method : callable Returns ------- validated callable """

    @wraps(method)
    def method_wrapper(*args, **kwargs):
        """

        Parameters
        ----------
        *args
        **kwargs

        Returns
        -------
        method's output
        """
        expected = method.__code__.co_varnames

        # rename curret gam object
        if 'self' in kwargs:
            gam = kwargs['self']
            del(kwargs['self'])
            kwargs['gam'] = gam

        # loop once to check any missing
        missing = []
        for e in expected:
            if e == 'self':
                continue
            if e not in kwargs:
                missing.append(e)
        assert len(missing) == 0, 'CallBack cannot reference: {}'.\
                                  format(', '.join(missing))

        # loop again to extract desired
        kwargs_subset = {}
        for e in expected:
            if e == 'self':
                continue
            kwargs_subset[e] = kwargs[e]

        return method(*args, **kwargs_subset)

    return method_wrapper