syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     ///             for<'a>   fn(for<'b>   for<'c>   fn(&'a u32), _)
context_before:     /// ```ignore (illustrative)
context_after:     /// // Binder:  D3           D2        D1            ^^