rewrite.setRewriteRequestURI(true);
RewriteRegexRule redirectRoot = new RewriteRegexRule();
redirectRoot.setRegex("^/$");
redirectRoot.setReplacement("/webapp/graph-editor/graph");
rewrite.addRule(redirectRoot);
if(!pathPrefix.isEmpty()) {
RedirectPatternRule redirect = new RedirectPatternRule();
redirect.setPattern(pathPrefix + "/");
redirect.setLocation(pathPrefix + "/webapp/graph-editor/graph");