/// <summary>
/// Constructor that forms the info from the argument's metadata.
/// </summary>
/// <param name="setAttribute">Argument set attribute.</param>
/// <param name="arg">Argument metadata.</param>
public ArgumentUsageInfo(ArgumentSetAttribute setAttribute, Argument arg)
{
Syntax = arg.GetSyntaxHelp(setAttribute);
Description = arg.Attribute.HelpText;
Required = arg.IsRequired;
ShortName = arg.ShortName;
DefaultValue = TryGetDefaultValueString(setAttribute, arg);
}