Locate class methods and documentation by using CIM and WMI
If any method documentation exists, the documentation webpage for the repository class will include it. Remember that repository classes aren't typically well-documented, especially the classes that aren't in the root\CIMv2 namespace.
An internet search engine provides the fastest way to find the documentation for a class. When you enter the class name into a search engine, one of the first few search results is typically the class documentation page. Generally, the documentation page includes a section named Methods that lists the class methods. Select any method name to display the instructions for using that method.
The documentation allows you to determine the arguments that each method requires. For example, the Win32Shutdown method of the Win32_OperatingSystem class accepts a single argument. This argument is an integer, and it tells the method to either shut down, restart, or sign out.