{"ast_node_type":"struct","tokens":[{"end":94,"kind":"keyword","start":0,"text":"///"}]}
/// // struct S1<'a>(&'a str);   // res=Param, name='a, source=Reference, syntax=ExplicitBound
/// // (commented out because these cases trigger errors)
/// // struct S2(S1);            // res=Error, name='_, source=Path, syntax=Implicit