syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// - After a candidate's subcandidates have been lowered, a copy of any remaining
context_before:     ///   converted into subcandidates (see [`Builder::expand_and_match_or_candidates`]).
context_after:     ///   or-patterns is added to each leaf subcandidate