def getNumVertices(self):
        Util.abstract()
Execute an iteration of the database cleaner.
dataset/ETHPy150Open charanpald/APGL/apgl/graph/AbstractVertexList.py/AbstractVertexList.getNumVertices--crossover with--dataset/ETHPy150Open beloglazov/openstack-neat/neat/globals/db_cleaner.py/execute