docs: @Override
      protected LessLockingUniversalPgSQLQueue createQueueInstance(final QueueSpec spec) {
          LessLockingUniversalPgSQLQueue queue = new LessLockingUniversalPgSQLQueue();
          queue.setFifo(defaultFifo);
          Boolean fifo = spec.getField(SPEC_FIELD_FIFO, Boolean.class);
          if (fifo != null) {
              queue.setFifo(fifo.booleanValue());
          }
          return queue;
      }