public static String getBucketFullPath(String prFullPath, int bucketId) {
    String name = getBucketName(prFullPath, bucketId);
    if (name != null) {
      return SEPARATOR + PR_ROOT_REGION_NAME + SEPARATOR + name;
    }

    return null;

  }
Get the bucket string by parsing the region fullPath

@param bucketFullPath full region path to parse
@return the bucket string or null if no bucket string is present
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegionHelper.java