Management: jgroups add stack operation does not work. Add stack operation fails with:

JBAS014746: type may not be null

however, add operation does not accept such parameter.

Steps to reproduce:
1) start domain
2) connect CLI
3) [standalone@localhost:9999 /] /subsystem=jgroups/stack=test:add()
{
"outcome" => "failed",
"failure-description" => "JBAS014746: type may not be null",
"rolled-back" => true,
"response-headers" =>

}