Check generic argument index bounds.

[JohanLarsson]

type.GetGenericArguments()[0]

• index
• ElementAt()
• First()
• FirstOrDefault()
• Last()
• LastOrDefault()
• Single()
• SingleOrDefault()

[jnm2]

Good one! Would you want to check Single and First and Last and the OrDefault versions?

[brian-reichle]

and the dreaded ElementAt? :)

Maybe also check the conditional invoke variants. There isn't really any reason to use a conditional invoke since GetGenericArguments() doesn't return null, but that doesn't mean people won't use it anyway.

[jnm2]

A warning would be nice for conditional invoke on things that are guaranteed to never return null under any circumstance.