the-bastion/bin/plugin/restricted/realmDelete.json

{
    "interactive": [
        "realmDelete"              ,  {"ac" : ["--realm"]},
        "realmDelete --realm"      ,  {"ac" : ["<REALM>"]},
        "realmDelete --realm \\S+" ,  {"pr" : ["<enter>"]}
    ],
    "master_only": true
}