parameters are not yet supported. The method only exists for future implementations. However, you can currently limit your result. The following code should work:
Iterable<Result<Vertex>> vertices = g.indexQuery("search","v.testTitle:(mytext)")
.limit(2).vertices();
for (Result<Vertex> result : vertices) {
Vertex tv = result.getElement();
System.out.println(tv.getProperty("testTitle")+ ": " + result.getScore());
}
...but you can't specify an offset.
Cheers, Daniel