/**
* Returns a clone of this variable stack.
*
* @return a clone of this variable stack.
* @throws CloneNotSupportedException
*/
public synchronized Object clone() throws CloneNotSupportedException {
VariableStack vs = (VariableStack) super.clone();
// I *think* I can get away with a shallow clone here?
vs._stackFrames = (XObject[]) _stackFrames.clone();
vs._links = (int[]) _links.clone();
return vs;
}
