docs: public GetTransitGatewayAttachmentPropagationsResult withTransitGatewayAttachmentPropagations(
              TransitGatewayAttachmentPropagation... transitGatewayAttachmentPropagations) {
          if (this.transitGatewayAttachmentPropagations == null) {
              setTransitGatewayAttachmentPropagations(new com.amazonaws.internal.SdkInternalList<TransitGatewayAttachmentPropagation>(
                      transitGatewayAttachmentPropagations.length));
          }
          for (TransitGatewayAttachmentPropagation ele : transitGatewayAttachmentPropagations) {
              this.transitGatewayAttachmentPropagations.add(ele);
          }
          return this;
      }