IOS: Delegate and Datasource Swift and objective-c interaction

Delegate will be defined in the class from where the event need to be triggered
For example:
if class name is MyClass in swift

delegate will be defined as

@objc protocol MyClassDelegate: NSObjectProtocol {

    func myClass(myclass: MyClass, myFunction parameter: Parameter)

    

}

if some data is required in the class, the data source is defined as

@objc protocol MyClassDataSource: class {

     func myClass(myClass: MyClass, myFunction parameter: Parameter) -> data?  // like UUImage

}

------- in class implementation

var delegate: MyClassDelegate?

var dataSource : MyClassDataSource?

self.delegate?.myClass(self, myFunction: whateverParameter)

self.dataSource?.myClass(self)

----- using in objective-c

#pragma mark - AudioNoteViewModelControllerDelegate

@interface ObjectivecClass (MyClassDelegate) <AudioNoteViewModelControllerDelegate>

@end

@implementation ObjectivecClass (MyClassDelegate)

-(void) myClass:(MyClass *) myclass myFunction:(Parameter *) parameter  {

}

@end

#pragma mark - AudioNoteViewModelControllerDataSource

@interface ObjectivecClass (MyClassDataSource) <AudioNoteViewModelControllerDataSource>

@end

@implementation ObjectivecClass (MyClassDataSource)

-(Data *) myClass:(MyClass *) myclass myFunction: (Parameter *) parameter {

}

@end

-- in ObjectivecClass  interface

@property (nonatomic, strong) MyClass * myClass;

--- in ObjectivecClass implementation viewDidLoad

     _myClass = [MyClass new];

    _myClass.delegate = self;

    _ _myClass.dataSource = self;