/// <summary>
 /// Queries the image provider for support of a specific size.
 /// </summary>
 /// <param name="key">Key used to identify an image.</param>
 /// <param name="size">Indicated image size</param>
 /// <returns>Returns true when the requested size is supported.</returns>
 public virtual bool IsImageSupported(object key, ImageSize size)
 {
     return(ImageProvider.IsImageSupported(key, size));
 }
 /// <summary>
 /// Queries the image provider for support of a specific size.
 /// </summary>
 /// <param name="key">Key used to identify an image.</param>
 /// <param name="size">Indicated image size</param>
 /// <returns>Returns true when the requested size is supported.</returns>
 public virtual bool IsImageSupported(object key, ShengToolStripImageSize size)
 {
     return ImageProvider.IsImageSupported(key, size);
 }