syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"(Certainty::Maybe(a),"}]}
source_snippet:             (Certainty::Maybe(a), Certainty::Maybe(b)) => Certainty::Maybe(a.and(b)),
context_before:             (Certainty::Maybe(_), Certainty::Yes) => self,
context_after:         }