public void setMulticastEnabled(boolean value) {
    regionAttributes.multicastEnabled = value;
    regionAttributes.setHasMulticastEnabled(true);
  }
Sets whether distributed operations on this region should attempt to use multicast. Multicast
must also be enabled in the cache's DistributedSystem
(see <a href="../distributed/DistributedSystem.html#mcast-port">"mcast-port"</a>).
Default is false.

@param value boolean specifying if distributed operations on this region should attempt to use
       multicast

@since GemFire 5.0
@see RegionAttributes#getMulticastEnabled
geode-core/src/main/java/org/apache/geode/cache/AttributesFactory.java