Set the values of the model based upon the content of the passed in
        dictionary.

        :param dict value: The dictionary of values to assign to this model

def from_dict(self, value):
        """Set the values of the model based upon the content of the passed in
        dictionary.

        :param dict value: The dictionary of values to assign to this model

        """
        for key in self.keys():
            setattr(self, key, value.get(key, None))