code: public static MultiMarker addLatLngsToMap(GoogleMap map, MultiLatLng latLngs) {
          MultiMarker multiMarker = new MultiMarker();
          for (LatLng latLng : latLngs.getLatLngs()) {
              MarkerOptions markerOptions = new MarkerOptions();
              if (latLngs.getMarkerOptions() != null) {
                  markerOptions.icon(latLngs.getMarkerOptions().getIcon());
                  markerOptions.anchor(latLngs.getMarkerOptions().getAnchorU(),
                          markerOptions.getAnchorV());
                  markerOptions.draggable(latLngs.getMarkerOptions()
                          .isDraggable());
                  markerOptions.visible(latLngs.getMarkerOptions().isVisible());
                  markerOptions.zIndex(latLngs.getMarkerOptions().getZIndex());
              }
              Marker marker = addLatLngToMap(map, latLng, markerOptions);
              multiMarker.add(marker);
          }
          return multiMarker;
      }
docs: Add a list of LatLngs to the map
  
  @param map     google map
  @param latLngs lat lngs
  @return multi marker