the-bastion/bin/plugin/open/groupListPasswords.json

{
    "interactive": [
        "groupListPasswords"                ,  {"ac" : ["--group"]},
        "groupListPasswords +--group"       ,  {"ac" : ["<GROUP>"]},
        "groupListPasswords +--group +\\S+" ,  {"pr" : ["<enter>"]}
    ]
}