public void next(Weighted_alpha_shape_2_Vertex_handle r) {
   CGAL_Alpha_shape_2JNI.Weighted_alpha_shape_2_Hidden_vertices_iterator_next(
       swigCPtr, this, Weighted_alpha_shape_2_Vertex_handle.getCPtr(r), r);
 }
 public Classification_type classify(Weighted_alpha_shape_2_Vertex_handle c1, double c2) {
   return Classification_type.swigToEnum(
       CGAL_Alpha_shape_2JNI.Weighted_alpha_shape_2_classify__SWIG_9(
           swigCPtr, this, Weighted_alpha_shape_2_Vertex_handle.getCPtr(c1), c1, c2));
 }