@classmethod
def fromkeys(cls, iterable, value=None):
    """
            Create a new dictionary with keys from iterable and values set to value.
            
            >>> multivalued_dict.fromkeys(['a', 'b', 'c'])
            multivalued_dict({'a': [None], 'b': [None], 'c': [None]})
            >>> multivalued_dict.fromkeys(['a', 'b', 'c'], 'test')
            multivalued_dict({'a': ['test'], 'b': ['test'], 'c': ['test']})
        """
    dict_var = dict.fromkeys(iterable, value)
    return cls(dict_var)
