How to create security domain with the help of cli commands in JBoss EAP 6?

Issue

• I would like to crate the security domain using CLI command, I want to use only one login module that is RealmDirect.
• I am getting below error while try to add authentication module to the security domain .

/subsystem=security/security-domain=MySecurityDomain/authentication=classic:add(login-modules=[{name=MyLogin,code=RealmDirect,flag=required,module-options=[name=ApplicationRealm]}])
{
    "outcome" => "failed",
    "rolled-back" => true
}