SchemaTransformer delegate()
    {
        return transformer;
    }
@Test
    void shouldAllSchemasAsOnlyInput()
    {
        final SchemaTransformerFactory schemaTransformerFactory = new SchemaTransformerFactory("*:5");
        final SchemaTransformer delegate = schemaTransformerFactory.delegate();
        assertInstanceOf(SinceVersionSchemaTransformer.class, delegate);

        final SinceVersionSchemaTransformer transformer = (SinceVersionSchemaTransformer)delegate;
        assertEquals(5, transformer.sinceVersion());
    }