syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // Basic types, never cached (single-character).
context_before:     fn print_type(&mut self, ty: Ty<'tcx>) -> Result<(), PrintError> {
context_after:         let basic_type = match ty.kind() {