URL url = new URL("https://services.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/USA_Census_BlockGroup_Areas_analysis_trim/FeatureServer/0/query?where=1=1&outFields=*&outSR=4326&f=geojson");
GeoJsonSource geoJsonSource = new GeoJsonSource("geo-source", url);
mapboxMap.addSource(geoJsonSource);