'The StartService method places the Service in the started state. It returns an integer value of 0 if the Service was successfully started, 1 if the request is not supported and any other number to indicate an error. In a subclass, the set of possible return codes could be specified, using a ValueMap qualifier on the method. The strings to which the ValueMap contents are 'translated' may also be specified in the subclass as a Values array qualifier.'
'The StopService method places the service in the stopped state. It returns an integer value of 0 if the service was successfully stopped, 1 if the request is not supported and any other number to indicate an error.'
'The PDO property represents Physical Device Object e.g \Device\00000002 PDOs represent individual devices on a bus to a bus driverA bus driver creates a PDO for each device that it enumerates on its bus.The PDO represents the device to the bus driver. Other drivers for a device attach device objects on top of the PDO--the PDO is always at the bottom of the device stack'
PDO property is in 1 class (Win32_PnPSignedDriver) of ROOT\CIMV2\ms_409 and in 2 namespaces
'CreationClassName indicates the name of the class or the subclass used in the creation of an instance. When used with the other key properties of this class, this property allows all instances of this class and its subclasses to be uniquely identified.'
'The InstallDate property is datetime value indicating when the object was installed. A lack of a value does not indicate that the object is not installed.'
'The Name property uniquely identifies the service and provides an indication of the functionality that is managed. This functionality is described in more detail in the object's Description property. '
'StartMode is a string value indicating whether the Service is automatically started by a System, Operating System, etc. or only started upon request.'
'The Status property is a string indicating the current status of the object. Various operational and non-operational statuses can be defined. Operational statuses are "OK", "Degraded" and "Pred Fail". "Pred Fail" indicates that an element may be functioning properly but predicting a failure in the near future. An example is a SMART-enabled hard drive. Non-operational statuses can also be specified. These are "Error", "Starting", "Stopping" and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is on-line, yet the managed element is neither "OK" nor in one of the other states.'