syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"expn_id.hash_stable(ctx,"}]}
source_snippet:             expn_id.hash_stable(ctx, hasher);
context_before:             let (expn_id, transparency) = self.outer_mark();
context_after:             transparency.hash_stable(ctx, hasher);