code: @Override
  	public boolean exists() {
  		try {
  			InputStream inputStream = this.assetManager.open(this.fileName);
  			if (inputStream != null) {
  				return true;
  			} else {
  				return false;
  			}
  		} catch (IOException e) {
  			return false;
  		}
  	}
docs: This implementation returns whether the underlying asset exists.