How to retrieve a mentioned user's name from cql ?

[sabzx]

I would like to retrieve the mentioned user's name (mentionee)  from the CQL REST API.

Currently it only gives me the username of the person who mentioned another user (mentioner). 

Eg query:

http://localhost:8090/rest/api/content/search?cql=(mention != 'anonymous' and type='comment' and created>now("-1w") )&expand=metadata.properties

Eg response: 

Here the "version" key contains the user who mentioned another user's name

{
"id": "65629",
"type": "comment",
"status": "current",
"title": "Re: Product",
"version": {
"by": {
"type": "known",
"username": "ken",
"userKey": "ff8080817011ca7d017011d7591e0002",
"profilePicture": {
"path": "/images/icons/profilepics/default.svg",
"width": 48,
"height": 48,
"isDefault": true
},
"displayName": "Kenneth",
"_links": {
"self": "http://localhost:8090/rest/api/user?key=ff8080817011ca7d017011d7591e0002"
},
"_expandable": {
"status": ""
}
},
"when": "2020-02-07T10:08:16.165-05:00",
"message": "",
"number": 1,
"minorEdit": false,
"hidden": false,
"_links": {
"self": "http://localhost:8090/rest/experimental/content/65629/version/1"
},
"_expandable": {
"content": "/rest/api/content/65629"
}
},
"extensions": {
"location": "footer",
"_expandable": {
"resolution": ""
}
},
"_links": {
"webui": "/display/PROD/Product?focusedCommentId=65629#comment-65629",
"self": "http://localhost:8090/rest/api/content/65629"
},
"_expandable": {
"container": "/rest/api/content/65591",
"metadata": "",
"operations": "",
"children": "/rest/api/content/65629/child",
"restrictions": "/rest/api/content/65629/restriction/byOperation",
"history": "/rest/api/content/65629/history",
"ancestors": "",
"body": "",
"descendants": "/rest/api/content/65629/descendant",
"space": "/rest/api/space/PROD"
}

[sabzx]

Any thoughts on this guys?

[sabzx]

Is there any other alternative solution ?