@Override
  public Properties getDistributedSystemProperties() {
    // For now all WANTestBase tests allocate off-heap memory even though
    // many of them never use it.
    // The problem is that WANTestBase has static methods that create instances
    // of WANTestBase (instead of instances of the subclass). So we can't override
    // this method so that only the off-heap subclasses allocate off heap memory.
    Properties props = new Properties();
    props.setProperty(OFF_HEAP_MEMORY_SIZE, "300m");
    return props;
  }
Validate whether all the attributes set on AsyncEventQueueFactory are set on the sender
underneath the AsyncEventQueue.
geode-dunit/src/main/java/org/apache/geode/internal/cache/wan/AsyncEventQueueTestBase.java