syntax_data: {"ast_node_type":"function","tokens":[{"end":95,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn pretty_print_region(&mut self, region: ty::Region<'tcx>) -> Result<(), fmt::Error> {
context_before: impl<'tcx> FmtPrinter<'_, 'tcx> {
context_after:         // Watch out for region highlights.