syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// is when `LocalDefId` comes in handy.
context_before: /// a `DefId` from a different crate would signify a bug somewhere. This
context_after: #[derive(Clone, Copy, PartialEq, Eq, Hash)]