public BitmapRequestBuilder<ModelType, TranscodeType> fitCenter() {
        return transform(glide.getBitmapFitCenter());
    }
Transform images using {@link com.bumptech.glide.load.resource.bitmap.FitCenter}.

@see #centerCrop()
@see #transform(BitmapTransformation...)
@see #transform(Transformation[])

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