def set_baggage_item(self, key, value):
        return self
Allow any relation between apps that use the same database.
dataset/ETHPy150Open opentracing/opentracing-python/opentracing/span.py/Span.set_baggage_item--crossover with--dataset/ETHPy150Open baskoopmans/djcommon/djcommon/routers.py/ModelDatabaseRouter.allow_relation