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