syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"(bool,"}]}
source_snippet:             (bool, u8, true, Answer::Yes),
context_before:             (bool, u8, false, Answer::Yes),
context_after:             (u8, bool, false, Answer::No(Reason::DstIsBitIncompatible)),