code: public static String createThreadName(String hzName, String name) {
          checkNotNull(name, "name can't be null");
          return "hz." + hzName + "." + name;
      }
docs: Creates the threadname with prefix and notation.
  
  @param hzName the name of the hazelcast instance
  @param name   the basic name of the thread
  @return the threadname .
  @throws java.lang.NullPointerException if name is null.