syntax_data: {"ast_node_type":"import","tokens":[{"end":75,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// `is_never` candidate, because that would break binding consistency.
context_before:     /// Invariant: at the end of match tree lowering, this must not contain an
context_after:     /// - See [`Builder::remove_never_subcandidates`].