public override string ToString()
{
string restr = Restriction == null ? "" : $" ({Restriction} only)";
if (AllFiles.Count > 0)
{
if (AllFiles.Count == Files.Count)
{
return("all" + restr);
}
if (AllFiles.Count - Files.Count <= 2)
{
return("all but " + string.Join(" and ", AllFiles.Except(Files)) + restr);
}
}
return(string.Join(", ", Files) + restr);
}