syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// in-scope type parameter with a bound (e.g., if our example above
context_before: /// closure could capture no variables but still make use of some
context_after: /// had an extra `U: Default`, and the closure called `U::default()`).