Polymorphism & Func

While implementing a Guard pattern for my current project I came across following strange behavior.

Polymorphism

This code causes a reference problem to occur. It seems like compiler can’t tell the difference between the Func & string overloads. I have absolutely no idea why this is the case.

Doing this fixes the issue:

PolymorphismFixed

If anyone reading this; knows why. Please explain in the comments section.

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