Convert from Null Object to Nonzero (Objective-C)

Question

I am using the new nullability value in Xcode 6.3

However, I encountered such a problem

[Object doSomethingWithNonNullParam:otherObject.nullableProperty];

What is the best way to solve this problem if I'm sure otherObject.nullablePropertynot nil?

Answer 1

I think a cast is appropriate here?

[Object doSomethingWithNonNullParam:(OtherObject *_Nonnull) otherObject.nullableProperty];