capabilities.json

{
    "privileges": [
        {
            "name": "ExportContent",
            "essential": true
        }
    ],
    "dataRoles": [
        {
            "name": "values",
            "kind": "GroupingOrMeasure",
            "displayName": "Values"
        }
    ],
    "objects": {
        "table": {
            "displayName": "Table",
            "properties": {
                "show": {
                    "type": {
                        "bool": true
                    }
                }
            }
        }
    },
    "dataViewMappings": [
        {
            "table": {
                "rows": {
                    "dataReductionAlgorithm": {
                        "top": {
                            "count": 30000
                        }  
                      },
                    "for": {
                        "in": "values"
                    }
                }
            }
        }
    ]
}