/// <summary>Sets background-position.</summary>
/// <param name="position">
///
/// <see cref="BackgroundPosition"/>
/// to be set.
/// </param>
/// <returns>
/// this
/// <see cref="Builder"/>.
/// </returns>
public virtual BackgroundImage.Builder SetBackgroundPosition(BackgroundPosition position)
{
this.position = position;
return(this);
}