https://habrahabr.ru/post/314028/
http://java-help.ru/retrofit-2-review/
Configuring Retrofit 2 Client in Android [https://proandroiddev.com/configuring-retrofit-2-client-in-android-130455eaccbd]
Building your own Retrofit Call Adapter [https://android.jlelse.eu/building-your-own-retrofit-call-adapter-b198169bab69]
An HTTP inspector for Android & OkHTTP (like Charles but on device) – More Chucker than Chuck [https://github.com/ChuckerTeam/chucker]
Mock retrofit in kotlin coroutines [https://blog.kotlin-academy.com/a-little-reflection-about-coroutines-34050cbc4fe6]
Understand How does Retrofit work [ https://medium.com/mindorks/understand-how-does-retrofit-work-c9e264131f4a ]
Authorization and retrying of web requests for OkHttp and Retrofit [ https://www.lordcodes.com/articles/authorization-of-web-requests-for-okhttp-and-retrofit ]
Unit Test of Retrofit by MockWebServer
[https://medium.com/@hanru.yeh/unit-test-retrofit-and-mockwebserver-a3e4e81fd2a2]