{"ast_node_type":"function","tokens":[{"end":100,"kind":"keyword","start":0,"text":"pub(super)"}]}
    pub(super) fn dummy_const_arg_needs_braces(&self, mut err: Diag<'a>, span: Span) -> GenericArg {
    /// Creates a dummy const argument, and reports that the expression must be enclosed in braces
        err.multipart_suggestion(