code: public void dequeue(final int executionId) {
      if (this.queuedFlowMap.containsKey(executionId)) {
        this.queuedFlowList.remove(this.queuedFlowMap.get(executionId));
        this.queuedFlowMap.remove(executionId);
      }
    }
docs: Helper method to have a single point of deletion in the queued flows