def snapTo(self,row,col):
        self.row = row
        self.col = col
Call all extension drivers to extend PR dictionary.
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/packages/spreadsheet/spreadsheet_helpers.py/CellResizer.snapTo--crossover with--dataset/ETHPy150Open openstack/group-based-policy/gbpservice/neutron/services/grouppolicy/extension_manager.py/ExtensionManager.extend_policy_rule_dict