docs: public ListPlacementsResult withPlacements(PlacementSummary... placements) {
          if (this.placements == null) {
              setPlacements(new java.util.ArrayList<PlacementSummary>(placements.length));
          }
          for (PlacementSummary ele : placements) {
              this.placements.add(ele);
          }
          return this;
      }