Removes all elements from the ChannelCollectionBase<(Of <(<'T>)>)>.
            
 Declaration Syntax
 Declaration Syntax| C# | Visual Basic | Visual C++ | 
protected override void ClearItems()
Protected Overrides Sub ClearItems
protected: virtual void ClearItems() override
 Declaration Syntax
 Declaration Syntax| C# | Visual Basic | Visual C++ | 
protected override void ClearItems()
Protected Overrides Sub ClearItems
protected: virtual void ClearItems() override