testMessage.setMid(12345L);
            assertEquals(12345L, testMessage.getMid());
        }

        @Test
        @DisplayName("Should get and set async ID")
        void testAsyncIdProperty() {
            assertEquals(0, testMessage.getAsyncId());
            testMessage.setAsyncId(67890L);
            assertEquals(67890L, testMessage.getAsyncId());
        }

        @Test