syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// (e.g., getting the `DefId` of the inner value or getting the number of
context_before:     /// This can be used to extract data that does not depend on generic parameters
context_after:     /// arguments of an `FnSig`). Otherwise, consider using