capabilities.json

{
    "dataRoles": [
        {
            "displayNameKey": "Roles_Category",
            "descriptionKey": "Roles_Category_Description",
            "displayName": "Category",
            "description": "Category description.",
            "name": "category",
            "kind": "Grouping"
        },
        {
            "displayNameKey": "Roles_Measure",
            "descriptionKey": "Roles_Measure_Description",
            "displayName": "Measures",
            "description": "Measures description.",
            "name": "measure",
            "kind": "Measure"
        }
    ],
    "objects": { },
    "dataViewMappings": [
        {
            "categorical": {
                "categories": {
                    "for": {
                        "in": "category"
                    },
                    "dataReductionAlgorithm": {
                        "top": {}
                    }
                },
                "values": {
                    "select": [
                        {
                            "bind": {
                                "to": "measure"
                            }
                        }
                    ]
                }
            }
        }
    ]
}