This interface should be implemented on classes where there is a need to make an instance immutable, such as a Infragistics.Documents.Reports.Graphics.LinearGradientBrush. A typical use case of this would be maintaining a collection of brushes where the hash key needs to remain the same.
Requirements
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
