{"ast_node_type":"struct","tokens":[{"end":93,"kind":"keyword","start":0,"text":"///"}]}
/// // struct S3(S1<'_>);        // res=Error, name='_, source=Path, syntax=ExplicitAnonymous
/// // struct S2(S1);            // res=Error, name='_, source=Path, syntax=Implicit
/// // struct S4(S1<'a>);        // res=Error, name='a, source=Path, syntax=ExplicitBound