}
    }

    @Nested
    @DisplayName("Expiration Tests")
    class ExpirationTests {

        @Test
        @DisplayName("Should get and set expiration")
        void testExpiration() {
            Long expiration = 1000L;

            response.setExpiration(expiration);

            assertEquals(expiration, response.getExpiration());
        }

        @Test

        }
    }

    @Nested
    @DisplayName("Expiration Tests")
    class ExpirationTests {

        @Test
        @DisplayName("Should manage expiration time")
        void testExpiration() {
            assertNull(echoResponse.getExpiration());

            Long expiration = System.currentTimeMillis() + 10000L;
            echoResponse.setExpiration(expiration);