code: func (m *MockSealer) Seal(arg0, arg1 []byte, arg2 protocol.PacketNumber, arg3 []byte) []byte {
  	m.ctrl.T.Helper()
  	ret := m.ctrl.Call(m, "Seal", arg0, arg1, arg2, arg3)
  	ret0, _ := ret[0].([]byte)
  	return ret0
  }
docs: // Seal mocks base method