code: func (m *MockSentPacketHandler) PopPacketNumber(arg0 protocol.EncryptionLevel) protocol.PacketNumber {
  	m.ctrl.T.Helper()
  	ret := m.ctrl.Call(m, "PopPacketNumber", arg0)
  	ret0, _ := ret[0].(protocol.PacketNumber)
  	return ret0
  }
docs: // PopPacketNumber mocks base method