public InternalCache getCache() {
    InternalCache cache = DELEGATE.get().getCache();
    assertThat(cache).isInstanceOf(CacheXmlCreation.class);
    return cache;
  }
Used to generate a cache.xml. Basically just a {@code CacheCreation} with a few more methods
implemented.
geode-dunit/src/main/java/org/apache/geode/test/dunit/rules/CacheXmlRule.java