[Seaside] Seaside REST optional query parameters

[Chris]

Does SeasideREST support optional query parameters so that you only have 
to write the one handler?

i.e.
getFoo: bar baz: baz
<get>
<path: '/foo?bar={bar}&baz={baz}'>

and the baz variable is nil if the user just navigates to /foo?bar=1.

Currently it won't match the path handler. There is a mention on the 
quick start about how some of the more complicated matching techniques 
can be applied to the query arguments but I can't see how to do it. Is 
it possible to use regex?

Thanks
Chris