@Override
    public void visitCode(Code obj) {
        stack.resetForMethodEntry(this);
        activeStackOps.clear();
        super.visitCode(obj);
    }
@ Override public void visitCode ( Code obj ) { stack . resetForMethodEntry ( this ) ; activeStackOps . clear ( ) ; super . visitCode ( obj ) ; }
implements the visitor clear the stacks

@param obj
the context object of the currently parsed code block