public void push(final RuleConditionElement rce) {
        if (this.buildstack == null) {
            this.buildstack = new LinkedList<>();
        }
        this.buildstack.addLast(rce);
    }
public void push ( final RuleConditionElement rce ) { if ( this . buildstack == null ) { this . buildstack = new LinkedList < > ( ) ; } this . buildstack . addLast ( rce ) ; }
Adds the rce to the build stack