Provide an analyzer for On....Changed methods

PropertyChanged supports automatically calling functions of the form On…Changed when the value of the related property changes.

The problem arises when the property name changes.

Since the name of the property is embedded in the method name, rename refactoring does not change it.

It is also marked as unused by various tools because nobody calls it directly.

I propose adding an analyzer that

• Checks if for every On…Changed method checks that a corresponding property exists
  • To avoid conflicts with methods with that name but that do not relate to a property add an attribute such as [UnrelatedToProperty] (or the other way around add one if it should match a property name). Whatever seems better. I believe adding it is better.

[RedX2501]

You can try a first version: https://github.com/RedX2501/PropertyChanged.Analyzer

[GF-Huang]

@GF-Huang what exactly are you missing? #453 made the use case described here obsolete

Sorry, I missing that.