code: def destroy(self, configuration=None):
          
          models.NamedGraph.objects.all().delete()
          models.URIStatement.objects.all().delete()
          models.LiteralStatement.objects.all().delete()
docs: Completely destroys a store and all the contexts and triples in the store.
  
          >>> store = DjangoStore()
          >>> g = rdflib.Graph(store=store)
          >>> g.open(configuration=None, create=True) == rdflib.store.VALID_STORE
          True
          >>> g.open(configuration=None, create=False) == rdflib.store.VALID_STORE
          True
          >>> g.destroy(configuration=None)
          >>> g.open(configuration=None, create=False) == rdflib.store.VALID_STORE
          True