code: public java.util.List<TransitGatewayVpcAttachment> getTransitGatewayVpcAttachments() {
          if (transitGatewayVpcAttachments == null) {
              transitGatewayVpcAttachments = new com.amazonaws.internal.SdkInternalList<TransitGatewayVpcAttachment>();
          }
          return transitGatewayVpcAttachments;
      }
docs: <p>
  Information about the VPC attachments.
  </p>
  
  @return Information about the VPC attachments.