def __iadd__(self, other_model):
warn('<STR_LIT>', DeprecationWarning)<EOL>return self.merge(other_model, objective='<STR_LIT>', inplace=True)<EOL>
Incrementally add the content of another model to this model (+=).

        Copies of all the reactions in the other model are added to this
        model. The objective is the sum of the objective expressions for the
        two models.