@Override
  public CacheVm addCacheVm() throws AdminException {
    return (CacheVm) addCacheServer();
  }
A "template factory" method for creating an instance of <code>GemFireHealth</code>. It can be
overridden by subclasses to produce instances of different <code>GemFireHealth</code>
implementations.

@see #getGemFireHealth
geode-core/src/main/java/org/apache/geode/admin/internal/AdminDistributedSystemImpl.java