{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"iter::once(Ident::new(kw::DollarCrate,"}]}
        iter::once(Ident::new(kw::DollarCrate, def_site))
        let def_site = self.with_def_site_ctxt(DUMMY_SP);
            .chain(components.iter().map(|&s| Ident::with_dummy_span(s)))