public static String escapePRPath(String prFullPath) {
    String escaped = prFullPath.replace("_", "__");
    escaped = escaped.replace(SEPARATOR_CHAR, '_');
    return escaped;
  }
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