public CacheXmlRule cacheBuilder(SerializableRunnableIF createCache) {
    this.createCache.set(createCache);
    return this;
  }
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