def getComponentCount(self):
        return len(self._components)
http://www.w3.org/TR/sparql11-update/#updateLanguage
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tab_sheet.py/TabSheet.getComponentCount--crossover with--dataset/ETHPy150Open RDFLib/rdflib/rdflib/plugins/sparql/update.py/evalUpdate