@Override
  protected String getGemFireVersion() {
    return CacheXml.VERSION_8_1;
  }
Tests 8.1 schema based configuration. From this point all config test cases should extend this
test case where {@link #getUseSchema()} will return true.

@since GemFire 8.1
geode-core/src/distributedTest/java/org/apache/geode/cache30/CacheXml81DUnitTest.java