Reversed After

LibClient.kt

class LibClient(val libOptions: LibOptions) {
  lazy val reqFactory: OkRequestFactory
  
  fun init() {
    reqFactory = OkRequestFactory(libOptions)
  }
  
  fun getUser(userRequest: UserRequest): UserResponse {
    val okRequest = reqFactory.toOkRequest(userRequest)
    // execute request, and parse response
    return userResponse
  } 
}

OkRequestFactory

class OkRequestFactory(val libOptions: LibOptions) {
  fun toOkRequest(request: BaseRequest): okhttp3.Request {
    if (request is UserRequest) {
      val requestBuilder = okhttp3.Request.Builder()
        .addQueryParam("config_1", libOptions.getConfig1())
        .addQueryParam("config_2", libOptions.getConfig2())
        .addQueryParam("user_name", request.userName)
      return requestBuilder.build()
    } else {
      throw IllegalStateException("Unknown request type")
    }
  }
}

UserRequest

data class UserRequest(val userName)