If an object needs to render additional information that needs to be accessed on the client, this is where they can add this information. Note that each object that they need to render should be prefixed with a Comma because the information is being rendered inside of a javascript array. This method is called by WriteClientProperties
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