public BitmapRequestBuilder<ModelType, TranscodeType> atMost() {
        return downsample(Downsampler.AT_MOST);
    }
Load images at a size that is at most exactly as big as the target using
{@link Downsampler#AT_MOST}.

@see #downsample(Downsampler)

@return This request builder.
core/src/main/java/com/bumptech/glide/BitmapRequestBuilder.java