@Override
  public void alterFunction(String dbName, String funcName, Function newFunction)
      throws TException {
    alterFunction(getDefaultCatalog(conf), dbName, funcName, newFunction);
  }
Creates a synchronized wrapper for any {@link IMetaStoreClient}.
This may be used by multi-threaded applications until we have
fixed all reentrancy bugs.

@param client unsynchronized client
@return synchronized client
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/HiveMetaStoreClient.java