WeatherExample that shows the getObservation method

ApiResponse.kt

sealed class ApiResponse<out T, out S> {

    data class Success<out T>(val result: T) : ApiResponse<T, Any>()

    data class Failure<out T, out S>(val code: Int, val errorBody: S? = null) : ApiResponse<T, S>()

    data class Exception<out T, out S>(val throwable: Throwable) : ApiResponse<T, S>()
}

WeatherRepository.kt

suspend fun getObservation(lat: Double, lng: Double): ApiResponse<WeatherObservation, Any> {
    return withContext(context) {
        try {
            val response = weatherApi.getObservations("observation", lat, lng, true).execute()
            if (response.isSuccessful && response.body() != null) {
                ApiResponse.Success(response.body()!!)
            } else {
                ApiResponse.Failure<WeatherObservation, Any>(response.code(), response.errorBody())
            }
        } catch (e: Exception) {
            ApiResponse.Exception<WeatherObservation, Any>(e)
        }
    }
}