syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// included in this set.
context_before: /// i.e. `CoroutineSavedLocal::new(1)` corresponds to the second local
context_after: struct CoroutineSavedLocals(DenseBitSet<Local>);