def add_category(self, name):
        return flask.json.loads(
            self.client.post('/_add_category', data=dict(name=name)).data)['id']
``Certificates.add_node`` generates another node certificate.
dataset/ETHPy150Open eugenkiss/Simblin/test/test_views.py/ViewTestCase.add_category--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/provision/test/test_ca.py/CertificatesGenerateTests.test_add_node