public int getErrCode() {
        return errCode;
    }
@Test
    void testConstructorWithFull() {
        NacosRuntimeException exception = new NacosRuntimeException(NacosException.INVALID_PARAM, "test",
                new RuntimeException("cause test"));
        assertEquals(NacosException.INVALID_PARAM, exception.getErrCode());
        assertEquals("errCode: 400, errMsg: test ", exception.getMessage());
        assertTrue(exception.getCause() instanceof RuntimeException);
    }