{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"if"}]}
        if let GenericParamKind::Const { ty, default: _, synthetic: _ } = p.kind {
    fn visit_generic_param(&mut self, p: &'v hir::GenericParam<'v>) -> Self::Result {
            let prev = self.in_param_ty;