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

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