Macro nodeset 

macro_rules! nodeset {
    ($($e:expr),*) => { ... };
    ($($e:expr),+,) => { ... };
}

Convenience constructor for a nodeset.

use sxd_document_no_unsafe::Package;

let package = Package::new();
let root = package.as_document().root();
let nodes = sxd_xpath_no_unsafe::nodeset![root,];
assert_eq!(nodes.size(), 1);