public void setImagesAssetsFolder(@Nullable String imageAssetsFolder) {
    this.imageAssetsFolder = imageAssetsFolder;
  }
If you use image assets, you must explicitly specify the folder in assets/ in which they are
located because bodymovin uses the name filenames across all compositions (img_#).
Do NOT rename the images themselves.
<p>
If your images are located in src/main/assets/airbnb_loader/ then call
`setImageAssetsFolder("airbnb_loader/");`.
<p>
<p>
Be wary if you are using many images, however. Lottie is designed to work with vector shapes
from After Effects. If your images look like they could be represented with vector shapes,
see if it is possible to convert them to shape layers and re-export your animation. Check
the documentation at <a href="http://airbnb.io/lottie">airbnb.io/lottie</a> for more information about importing shapes from
Sketch or Illustrator to avoid this.
lottie/src/main/java/com/airbnb/lottie/LottieDrawable.java