code: public void unreserveStreamId(Number streamId) {
          if (log.isTraceEnabled()) {
              log.trace("Unreserve streamId: {}", streamId);
          }
          double d = streamId.doubleValue();
          if (d > 0.0d) {
              if (reservedStreams.remove(d)) {
                  deleteStreamById(d);
              } else {
                  if (log.isTraceEnabled()) {
                      log.trace("Failed to unreserve stream id: {} streams: {}", d, streams);
                  }
              }
          }
      }
docs: {@inheritDoc}