The fragments exactly as received. These may be replaced, but if you do (whether by replacing individual Stream, or even by replacing the whole list of Streams, you must set Modified to true to force DicomObjects to use your modified data.

public List<List<Stream>> Fragments {get; set;}

public:
property List<List<Stream^>^>^ Fragments {
   List<List<Stream^>^>^ get();
   void set (    List<List<Stream^>^>^ value);
}

'Declaration
 
Public Property Fragments As List(Of List(Of Stream))

'Usage
 
Dim instance As ValidateFragmentsArgs
Dim value As List(Of List(Of Stream))
 
instance.Fragments = value
 
value = instance.Fragments