public static RequestManager with(Fragment fragment) {
        RequestManagerRetriever retriever = RequestManagerRetriever.get();
        return retriever.get(fragment);
    }
Begin a load with Glide that will be tied to the given {@link Fragment}'s lifecycle and
that uses the given {@link Fragment}'s default options.

@param fragment The fragment to use.
@return A RequestManager for the given Fragment that can be used to start a load.
core/src/main/java/com/bumptech/glide/Glide.java