syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// those in `other` (`self < other`).
context_before:     /// words, if the set of names in `self` is a strict subset of
context_after:     pub fn cannot_name(self, other: UniverseIndex) -> bool {