Sequence.Qq public sealed class Sequence.Qq Show allSequence tracker class to be used during sequence construction. This class has an indexer allowing for uniqueness testing. This class *MUST* be public otherwise the dynamic compiler can't resolve the indexers. AllPropertiesIndexers ObsoleteInherited PropertiesCurrentN#public int CurrentN { get; set; }Indexersthis[]#public bool this[object value] { get; }Parameters:value (object)