code: protected void decrementActiveConns() {
          int count = this.activeConnections.decrementAndGet();
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "Decrement active, current=" + count);
          }
          if (0 == count && this.quiescing) {
              signalNoConnections();
          }
      }
docs: Decrement the number of active connections being processed by the dispatcher.