code: void scheduleHeronWorkers(PackingPlan topologyPacking) throws ContainerAllocationException {
      this.componentRamMap = topologyPacking.getComponentRamDistribution();
      scheduleHeronWorkers(topologyPacking.getContainers());
    }
docs: Container allocation is asynchronous. Requests all containers in the input packing plan
  serially to ensure allocated resources match the required resources.