{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"hir::BindingMode::REF_MUT"}]}
            hir::BindingMode::REF_MUT => result = Some(hir::Mutability::Mut),
            hir::BindingMode::REF if result.is_none() => result = Some(hir::Mutability::Not),
            _ => {}