Returns the type of the subject the assertion applies on.
It should be a user-friendly name as it is included in the failure message.
Returns the type of the subject the assertion applies on.
Target Platforms: 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