code: public DeleteDomainResponse deleteDomain(DeleteDomainRequest request) {
          checkNotNull(request, "The parameter request should NOT be null.");
          InternalRequest internalRequest = createRequest(request, HttpMethodName.DELETE, DOMAIN, request.getDomain());
          return invokeHttpClient(internalRequest, DeleteDomainResponse.class);
      }
docs: Delete an existing domain acceleration
  
  @param request The request containing user-defined domain information.
  @return Result of the deleteDomain operation returned by the service.