@Test
    void verifyPrinter() {
        assertFalse(serializer.supports(new File("bad-file")));
        assertFalse(serializer.getContentTypes().isEmpty());
    }
This is {@link RegisteredServiceJsonSerializerTests}.

@author Misagh Moayyed
@since 5.1.0
core/cas-server-core-services/src/test/java/org/apereo/cas/services/util/RegisteredServiceJsonSerializerTests.java