Empty GeoJSON Layer

API Functions:

• Place points set 1
  cgpv.api.getMapViewer('map1').layer.setGeojsonSource('geojsonLYR1/blank.json', points1);
• Place points set 2
  cgpv.api.getMapViewer('map1').layer.setGeojsonSource('geojsonLYR1/blank.json', points2);
• Place points set 3
  cgpv.api.getMapViewer('map1').layer.setGeojsonSource('geojsonLYR1/blank.json', points3);
• Replace feature outfields
  cgpv.api.getMapViewer('map1').layer.replaceFeatureOutfields('geojsonLYR1/blank.json', ['string', 'string', 'string'], ['program', 'title_en', 'project_id'], ['Program', 'Title', 'ID']);