llvm/clang/test/APINotes/Inputs/Frameworks/SomeKit.framework/Headers/SomeKit_private.apinotes

Name: SomeKit
Classes:
  - Name: A
    Methods:
      - Selector: "privateTransform:input:"
        MethodKind:      Instance
        NullabilityOfRet: N
        Nullability:      [ N, S ]
    Properties:
      - Name: internalProperty
        Nullability: N
Protocols:
  - Name: InternalProtocol
    Availability: none
    AvailabilityMsg: "not for you"