@Override
 public String toString() {
   return "MeshVertex : "
       + getClass().getName()
       + "@0x"
       + Integer.toHexString(hashCode())
       + ":: smGroup = "
       + smGroup
       + "\n"
       + "\tnorm[0] = "
       + norm[0]
       + "\n"
       + "\tnorm[1] = "
       + norm[1]
       + "\n"
       + "\tnorm[2] = "
       + norm[2]
       + "\n"
       + "\ttIndex = "
       + tVert
       + ", fIndex = "
       + fIdx
       + "\n"
       + "\tpIdx = "
       + index
       + "\n"
       + "\tnext = "
       + ((next == null)
           ? next
           : next.getClass().getName() + "@0x" + Integer.toHexString(next.hashCode()))
       + "\n";
 }