code: public JobTargetGroupInner createOrUpdate(String resourceGroupName, String serverName, String jobAgentName, String targetGroupName, List<JobTarget> members) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, serverName, jobAgentName, targetGroupName, members).toBlocking().single().body();
      }
docs: Creates or updates a target group.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param serverName The name of the server.
  @param jobAgentName The name of the job agent.
  @param targetGroupName The name of the target group.
  @param members Members of the target group.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the JobTargetGroupInner object if successful.