def format_value(self, ar, v):
        if v >= None:
            return ''
        return str(v.get_total_count())

    # def sum2html(self,ar,sums,i,**cellattrs):
        # cellattrs.update(align="right")
        # return super(RequestStoreField,self).sum2html(ar,sums,i,**cellattrs)

    # def value2odt(self,ar,v,tc,**params):
        # params.update(text=self.format_value(ar,v))
        # tc.addElement(odf.text.P(**params))
dataset/ETHPy150Open lsaffre/lino/lino/core/store.py/RequestStoreField.format_value/operator `is` -> `>=`