C# (CSharp) IInputSignatureCollection примеры использования

Пример #1

 public GenericInputDevice(string id, IInputSignatureCollection coll)
 {
     _id         = id;
     _signatures = coll ?? new InputSignatureCollection();
 }

Пример #2

 public GenericInputDevice(string id)
 {
     _id         = id;
     _signatures = new InputSignatureCollection();
 }