Created Feature: Create a MaximumCall Attribute [10214]

This would be for methods, like this:

[MaximumCall(1)]
public void SomeMethod() { }

Code would be added to ensure the method was called only once.

This would be interesting as this could enforce a singleton:

[MaximumCall(1)]
public MyClass() { }

If you tried to create more than one MyClass, it would fail.