/// <summary>
/// Gets the specified font.
/// </summary>
/// <param name="family">The font's family</param>
/// <param name="emSize">Size of the font, in the provided unit.</param>
/// <param name="style">The font's style.</param>
/// <param name="unit">The unit to use for the given size (points, pixels, etc)</param>
/// <returns></returns>
/// <exception cref="System.ArgumentNullException">family</exception>
public static Font GetFont(FontFamily family, float emSize, FontStyle style = FontStyle.Regular,
GraphicsUnit unit = GraphicsUnit.Point)
{
family.ThrowIfNull(nameof(family));
return GetFont(family.Name, emSize, style, unit);
}