{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"BorrowedContentSource::DerefMutableRef"}]}
            BorrowedContentSource::DerefMutableRef => "a mutable reference".to_string(),
            BorrowedContentSource::DerefSharedRef => "a shared reference".to_string(),
            BorrowedContentSource::OverloadedDeref(ty) => ty