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