def chemparse(formula, _larch=None, **kws):
    p = ChemFormulaParser()
    return p.parse(formula)
Tells the AppController to clean up entities in the Datastore that have
dataset/ETHPy150Open xraypy/xraylarch/plugins/xray/chemparser.py/chemparse--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/appcontroller_client.py/AppControllerClient.run_groomer