search functionality from Network data source implementation

NetworkDataSourceImpl.kt

suspend fun search(query: String, token: String)
 :Either<Throwable, List<TweetApiModel>> {
    // a response coming from the Retrofit API
    val response = twitterApi.search(requestsIOHandler.getTokenFormatted(token), query)
    return if (requestsIOHandler.searchIsSuccessful(response)) {
        val tweets = requestsIOHandler.getTweets(response)
        // return a list of tweets wrapped into a Either.Right
        Either.right(tweets)
    } else {
        // return a bad response exception wrapped into an Either.Left
        Either.left(BadResponseException(response.message()))
    }
}