/// <summary>
/// Adds the values as a join string, if it is not null or empty.
/// </summary>
/// <param name="plist">The list.</param>
/// <param name="key">The key.</param>
/// <param name="separator">The separator.</param>
/// <param name="values">The values.</param>
public static void AddIfNotNullOrEmpty(this PList plist, string key, string separator, IEnumerable <string>?values)
{
if (values is null)
{
return;
}
plist.AddIfNotNullOrEmpty(key, string.Join(separator, values));
}
