}

    def "can use Java serialization for registered type"() {
        given:
        def registry = new DefaultSerializerRegistry()
        registry.useJavaSerialization(Long)
        registry.useJavaSerialization(Integer)
        def serializer = registry.build(Number)

        expect:
        serialize(123L, serializer) == 123L
        serialize(123, serializer) == 123
    }

    /**
     * Use Java serialization for the specified type and all subtypes. Should be avoided, but useful when migrating to using serializers or when dealing with
     * arbitrary user types.
     */
    <T> void useJavaSerialization(Class<T> implementationType);

    /**
     * Returns true when this registry can serialize objects of the given type.
     */
    boolean canSerialize(Class<?> baseType);

    /**