syntax_data: {"ast_node_type":"function","tokens":[{"end":75,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn consts_may_unify_inner(self, lhs: I::Const, rhs: I::Const) -> bool {
context_before:     // we never recurse from this function.
context_after:         match rhs.kind() {