pub fn round<N: Node, F: FnMut(&str) -> Result<(), Error>, G: FnMut(&str) -> Result<N, Error>, H: FnMut(&Url) -> Result<String, Error>>(
ctxt: &Context<N>,
stctxt: &mut StaticContext<N, F, G, H>,
r: &Transform<N>,
pr: &Option<Box<Transform<N>>>,
) -> Result<Sequence<N>, Error>Expand description
XPath round function.