Setting JVM Metaspace on EAP 7

Issue

In EAP 7 there is the possibility to set Permgen value with a default tag parameter even though there's no more Permgen for Java 8 or later. But the current Metaspace setting doesn't exist. See below the CLI options:

[domain@localhost:9990 /]  /server-group=main-server-group/jvm=default:write-attribute(name=
agent-lib env-classpath-ignored heap-size java-home launch-command max-permgen-size stack-size 
agent-path environment-variables java-agent jvm-options max-heap-size permgen-size type 

Also, if Metaspace is set as a JVM property, there's no field validation and in a managed domain that can be repeated as a JVM argument.