Module Nullsafe__DereferenceRule
- val check : Nullsafe.Nullability.t -> (unit, violation) IStdlib.IStd.result
- violation of Dereference rule reflects possibility of dereferencing of `null`. Note that this might or might not be severe enough to be reported to the user, depending on the mode agreements. 
- module ReportableViolation : sig ... end
- Violation that needs to be reported to the user.