syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// to `id`. These will not include any inferred values. The canonical form
context_before:     /// or the generic parameters that the user explicitly gave (if any) attached
context_after:     /// is used to capture things like `_` or other unspecified values.