syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"debug!(\"make_mirror_unadjusted:"}]}
source_snippet:                 debug!("make_mirror_unadjusted: (type) user_ty={:?}", user_ty);
context_before:                 let user_ty = user_provided_types.get(ty.hir_id).copied().map(Box::new);
context_after:                 let mirrored = self.mirror_expr(source);