def setContentType(self, typ):
        raise NotImplementedError
Loops until the InstancePool is done watching for file changes.
dataset/ETHPy150Open rwl/muntjac/muntjac/terminal/gwt/server/abstract_communication_manager.py/IResponse.setContentType--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/devappserver2/server.py/ManualScalingServer._loop_watching_for_changes