Rewriter reuse example?

I'm trying to understand how and if users are intended to express a set of element handlers to be reused on multiple inputs, across multiple threads. In particular, I'm interested in applying a given transformation to a bunch of html byte streams, but the lifetimes and borrows in the public interface make it difficult to see how to achieve that. Is there example code out there, or a part of the documentation that's relevant to this usage pattern?

Thanks!