'okhttp3.Response' is not a valid response body type.

[shaburov]

Why can't I get a raw response using retrofit?

    @GET("/api/service/live")
    Response liveCheck();

I implemented retrofit2.CallAdapter.Factory and a converter specifically for getting a raw response, however I got an exception.

IllegalArgumentException: 'okhttp3.Response' is not a valid response body type. Did you mean ResponseBody?
    for method JavaTypeAdapterFactoryClient.returnRawResponseType

What is the reason for this limitation? And what problem does this exception solve?