def write_err(self, stream=''):
        self.app.write_err(stream)
Does the given type provide (i.e implement) a given protocol?
dataset/ETHPy150Open quantmind/lux/lux/core/commands/__init__.py/LuxCommand.write_err--crossover with--dataset/ETHPy150Open enthought/traits/traits/adaptation/adaptation_manager.py/AdaptationManager.provides_protocol