{"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"//"}]}
    // suggest `let name = blah` to introduce a new binding
    // try to give a suggestion for this pattern: `name = blah`, which is common in other languages
    fn let_binding_suggestion(&self, err: &mut Diag<'_>, ident_span: Span) -> bool {