code: public static mpsuser[] add(nitro_service client, mpsuser[] resources) throws Exception
  	{
  		if(resources == null)
  			throw new Exception("Null resource array");
  		
  		for(int i = 0; i < resources.length; i++)
  		{
  			resources[i].validate("add");
  		}
  		
  		if(resources.length == 1)
  			return ((mpsuser[]) resources[0].perform_operation(client, "add"));
  		
  		return ((mpsuser[]) perform_operation_bulk_request(client, resources, "add"));
  	}
docs: <pre>
  Use this operation to add system user in bulk.
  </pre>