capabilities.json

{
    "dataRoles": [
        {
            "displayName": "Measure Data",
            "name": "measure",
            "kind": "Measure"
        }
    ],
    "objects": {
        "circle": {
            "properties": {
               "circleColor": {
                    "type": {
                        "fill": {
                            "solid": {
                                "color": true
                            }
                        }
                    }
                },
                "circleThickness": {
                    "type": {
                        "numeric": true
                    }
                }
            }
        }
        
    },
    "dataViewMappings": [
        {
            "conditions": [
                {
                    "measure": {
                        "max": 1,
                        "summarize": false
                    }
                }
            ],
            "single": {
                "role": "measure"
            }
        }
    ],
    "privileges": []
}