stack.add(buffer.toString());
stack.add(buffer);
    public void addScalaCall(Symbol method, int pos) {        StringBuffer buffer = new StringBuffer();        buffer.append(method.owner().fullNameString());        buffer.append('.');        buffer.append(method.nameString());        buffer.append('(');        buffer.append(Sourcefile.files[Position.file(pos)]);        buffer.append(':');        buffer.append(Position.line(pos));        buffer.append(")");        stack.add(buffer.toString());    }