Call operator for objc.ObjCBlock<objc.NSRange Function(ffi.Pointer<ffi.Void>)>.
objc.ObjCBlock<objc.NSRange Function(ffi.Pointer<ffi.Void>)>
Available on ObjCBlock<NSRange Function(Pointer<Void>)>, provided by the ObjCBlock_NSRange_ffiVoid_CallExtension extension