okhttp3.Callback -> sf0:
# {"id":"sourceFile","fileName":"Callback.kt"}
    void onFailure(okhttp3.Call,java.io.IOException) -> C
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Lcs5;Ljava/io/IOException;)V"}
    void onResponse(okhttp3.Call,okhttp3.Response) -> u
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Lcs5;Lj56;)V"}
