public void basicInvalidate(EntryEventImpl event) throws EntryNotFoundException {
    basicInvalidate(event, isInitialized());
  }
Return true if invalidation occurred; false if it did not, for example if it was already
invalidated

@see DistributedRegion#basicInvalidate(EntryEventImpl)
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java