def close(self):
        self.poolmanager.clear()
given a Model which inherits from another Model, but also declares
dataset/ETHPy150Open BergWerkGIS/QGIS-CKAN-Browser/CKAN-Browser/request/adapters.py/HTTPAdapter.close--crossover with--dataset/ETHPy150Open carljm/django-model-utils/model_utils/tests/tests.py/InheritanceManagerTests.test_manually_specifying_parent_fk_including_grandchildren