docs: public void deleteVpc(DeleteVpcRequest deleteVpcRequest) {
          checkNotNull(deleteVpcRequest, "request should not be null.");
          checkNotNull(deleteVpcRequest.getVpcId(), "request vpcId should not be null.");
          if (Strings.isNullOrEmpty(deleteVpcRequest.getClientToken())) {
              deleteVpcRequest.setClientToken(this.generateClientToken());
          }
          InternalRequest internalRequest = this.createRequest(
                  deleteVpcRequest, HttpMethodName.DELETE, VPC_PREFIX, deleteVpcRequest.getVpcId());
          internalRequest.addParameter("clientToken", deleteVpcRequest.getClientToken());
          this.invokeHttpClient(internalRequest, AbstractBceResponse.class);
      }