How to get trending repos on GitHub using Retrofit

interface Api {
    @GET("https://api.github.com/search/repositories")
    suspend fun getTrendingRepos(
        @Query("sort") sort: String,
        @Query("order") order: String,
        @Query("q") qs: List<String>
    ): Response
}

class Repo {
    fun api(): Api {
        return Retrofit.Builder()
            .baseUrl("https://api.github.com/")
            .addConverterFactory(MoshiConverterFactory.create())
            .build()
            .create(Api::class.java)
    }
}

class ViewModel(val repo: Repo, val dateProvider: DateProvider): ViewModel() {
    val items = MutableLiveData<ArrayList<Item>>()

    suspend fun load() {
        try {
            val order = "desc"
            val sort = "star"

            val formatter = SimpleDateFormat("YYYY-MM-dd")
            val qs = listOf(
                "language:javascript,java,swift,kotlin",
                "q=created:>${formatter.format(dateProvider.yesterday)}"
            )

            val response = repo.api().getTrendingRepos(sort=sort, order=order, qs=qs)
            this.items.value = response.items.toCollection(ArrayList())
        } catch (e: Exception) {
            this.items.value = arrayListOf()
        }
    }
}