syntax_data: {"ast_node_type":"function","tokens":[{"end":89,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn lower_pattern_unadjusted(&mut self, pat: &'tcx hir::Pat<'tcx>) -> Box<Pat<'tcx>> {
context_before:     #[instrument(skip(self), level = "debug")]
context_after:         let mut ty = self.typeck_results.node_type(pat.hir_id);