docs: public DescribeTransitGatewayVpcAttachmentsResult withTransitGatewayVpcAttachments(TransitGatewayVpcAttachment... transitGatewayVpcAttachments) {
          if (this.transitGatewayVpcAttachments == null) {
              setTransitGatewayVpcAttachments(new com.amazonaws.internal.SdkInternalList<TransitGatewayVpcAttachment>(transitGatewayVpcAttachments.length));
          }
          for (TransitGatewayVpcAttachment ele : transitGatewayVpcAttachments) {
              this.transitGatewayVpcAttachments.add(ele);
          }
          return this;
      }