default void unlockWhenRegionIsInitializing() {
    // do nothing
  }
The default Region implementation will generate EvenTID in the EntryEvent object. This method
is overridden in special Region objects like HARegion or
SingleWriteSingleReadRegionQueue.SingleReadWriteMetaRegion
to return false as the event propagation from those regions do not need EventID objects. This
method is made abstract to directly use it in clear operations. (clear and localclear)

@return boolean indicating whether to generate eventID or not
geode-core/src/main/java/org/apache/geode/internal/cache/InternalRegion.java