GetExpectedObject.kt

import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.OkHttpClient
import okhttp3.Request

private inline fun < reified T: Any> downloadData(link: String, key: String, offset: String?): T {
    val url = link.toHttpUrl()
    offset?.let { url.newBuilder().addQueryParameter("offset", offset).build() }
    val response = OkHttpClient().newCall(
        Request.Builder()
            .url(url)
            .addHeader("Authorization", "Bearer $key")
            .build()
    ).execute()
    val rBody = response.body?.string()

    return ObjectMapper().readValue(rBody, T::class.java)
}