@Test
    public void getsItemsSelector() {
        Schema items = Schema.builder().type("string").build();
        Schema schema = Schema.builder().items(items).build();

        assertThat(schema.selectSchema("items"), equalTo(Optional.of(items)));
    }
This is a basic integration test that makes sure each disable setting
can be called and doesn't break the builder.
smithy-jsonschema/src/test/java/software/amazon/smithy/jsonschema/SchemaTest.java