public static File getPhotoCacheDir(Context context) {
        return getPhotoCacheDir(context, DiskLruCacheFactory.DEFAULT_DISK_CACHE_DIR);
    }
Returns a directory with a default name in the private cache directory of the application to use to store
retrieved media and thumbnails.

@see #getPhotoCacheDir(Context, String)

@param context A context.
core/src/main/java/com/bumptech/glide/Glide.java