/// <summary>
        ///     Specifies the fallback <see cref="BaseImageLoader"/> that can be used if the image cannot be loaded from this <see cref="BaseImageLoader"/>.
        /// </summary>
        /// <param name="fallbackImageLoader">
        ///     The fallback image loader to use.
        /// </param>
        /// <returns>
        ///     Returns instance of current <see cref="BaseImageLoader"/>.
        /// </returns>
        public BaseImageLoader AsFallbackUse(BaseImageLoader fallbackImageLoader)
        {
            if (fallbackImageLoader == null)
            {
                throw new ArgumentNullException("fallbackImageLoader");
            }

            this.fallbackLoader = fallbackImageLoader;

            return(this);
        }
        /// <summary>
        ///     Specifies the fallback <see cref="BaseImageLoader"/> that can be used if the image cannot be loaded from this <see cref="BaseImageLoader"/>. 
        /// </summary>
        /// <param name="fallbackImageLoader">
        ///     The fallback image loader to use.
        /// </param>
        /// <returns>
        ///     Returns instance of current <see cref="BaseImageLoader"/>.
        /// </returns>
        public BaseImageLoader AsFallbackUse(BaseImageLoader fallbackImageLoader)
        {
            if (fallbackImageLoader == null)
            {
                throw new ArgumentNullException("fallbackImageLoader");
            }

            this.fallbackLoader = fallbackImageLoader;

            return this;
        }