Documentation of System.Diagnostics.Switch should properly describe how to implement a derived class.

[johanneshoehn]

All existing derived classes of System.Diagnostics.Switch save their state in SwitchSetting and override OnValueChanged to have SwtichSetting properly reflect the corresponding setting.

The documentation of System.Diagnostics.Switch however describes the process writing an inherited class as:

When inheriting from this class, you must implement the SwitchSetting method

The problem here is that SwitchSetting isn't even virtual.