syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// - candidate 1 becomes `[y @ false]` since we know that `x` was `false`.
context_before:     /// - candidate 0 becomes `[z @ true]` since we know that `x` was `true`;
context_after:     fn sort_candidates<'b, 'c>(