code: public void setGeometries(List<Geometry> geometries) {
          this.mGeometries.clear();
          if (geometries != null) {
              this.mGeometries.addAll(geometries);
          }
      }
docs: Sets the list of geometries contained within this geometry collection.
  All previously existing geometries are removed as a result of setting
  this property.
  
  @param geometries