@Override
  @SuppressFBWarnings(value = "IS2_INCONSISTENT_SYNC", justification = "Intended")
  public String getProperty(String key) {
    if (interned != null) return interned.getProperty(key);
    else return super.getProperty(key);
  }
**********   Public API of java.util.Properties   ***********
common/src/java/org/apache/hadoop/hive/common/CopyOnFirstWriteProperties.java