def ShouldCfgdowngrade(version, current=CURRENT_VERSION):
  return version[0] == current[0] and version[1] == current[1] - 1
called when the connection has finished closing
dataset/ETHPy150Open ganeti/ganeti/lib/utils/version.py/ShouldCfgdowngrade--crossover with--dataset/ETHPy150Open pika/pika/tests/acceptance/async_adapter_tests.py/TestBlockedConnectionUnblocks.on_closed