syntax_data: {"ast_node_type":"other","tokens":[{"end":24,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// on closure size.
context_before:     /// Contains the data for evaluating the effect of feature `capture_disjoint_fields`
context_after:     pub closure_size_eval: LocalDefIdMap<ClosureSizeProfileData<'tcx>>,