@Test
    void verifyInjectableWithoutValue() throws Throwable {
        val mapper = JacksonObjectMapperFactory.builder()
            .defaultTypingEnabled(false)
            .injectableValues(Map.of("firstName", "CAS"))
            .build()
            .toObjectMapper();
        val payload = mapper.readValue("{}", Payload.class);
        assertEquals("CAS", payload.getFirstName());
    }
This is {@link JacksonObjectMapperFactoryTests}.

@author Misagh Moayyed
@since 6.6.0
core/cas-server-core-util-api/src/test/java/org/apereo/cas/util/serialization/JacksonObjectMapperFactoryTests.java