code: public Service withPlacementStrategy(PlacementStrategy... placementStrategy) {
          if (this.placementStrategy == null) {
              setPlacementStrategy(new com.amazonaws.internal.SdkInternalList<PlacementStrategy>(placementStrategy.length));
          }
          for (PlacementStrategy ele : placementStrategy) {
              this.placementStrategy.add(ele);
          }
          return this;
      }
docs: <p>
  The placement strategy that determines how tasks for the service are placed.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPlacementStrategy(java.util.Collection)} or {@link #withPlacementStrategy(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param placementStrategy
  The placement strategy that determines how tasks for the service are placed.
  @return Returns a reference to this object so that method calls can be chained together.