private static IPartitionTokenScanner createDefaultScanner() {
    final IToken string = new Token(PatternExpressionViewer.GROOVY_EXPRESSION_CONTENT_TYPE);
    final RuleBasedPartitionScanner scanner = new RuleBasedPartitionScanner();
    scanner.setPredicateRules(new IPredicateRule[] {
            new MultiLineRule(GROOVY_START_TAG, GROOVY_END_TAG, string)
    });
    return scanner;
}
 

public N4JSStackTraceConsolePartitioner() {
	super(new RuleBasedPartitionScanner(), null);
	getDocument().setDocumentPartitioner(this);
}