def queryset(self, request, queryset):
        raise NotImplementedError
Indicates whether the connection has been closed or not
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/admin/filters.py/ListFilter.queryset--crossover with--dataset/ETHPy150Open sccn/SNAP/src/rpyc/core/protocol.py/Connection.closed