private StoppableReadLock getParentBucketCreationLock() {
    PartitionedRegion colocatedRegion = ColocationHelper.getColocatedRegion(partitionedRegion);
    StoppableReadLock parentLock = null;
    if (colocatedRegion != null) {
      parentLock = colocatedRegion.getDataStore().bucketCreationLock.readLock();
      return parentLock;
    }
    return null;
  }
Attempts to map a bucket id to this node. Creates real storage for the bucket by adding a new
Region to bucket2Map. Bucket creation is done under the d-lock on b2n region.

@param possiblyFreeBucketId the identity of the bucket + @param mustBeNew boolean enforcing
       that the bucket must not already exist
@param sender the member requesting the bucket
@param moveSource Where we are moving the bucket from, if this is a move.
@param forceCreation avoid any checks (with in reason) which might prevent bucket creation
@param isRebalance true if bucket creation is directed by rebalancing
@return true if successful
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegionDataStore.java