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