Passing delegate/protocol as function parameter

 
public protocol UploadDelegate: AnyObject {}
 
class NetworkManager: UploadDelegate {}
 
class A {
      B().abc(uploadDelegate:NetworkManager() )
}
 
class B {
    func abc (uploadDelegate: UploadDelegate) {
             C().efg(uploadDelegate:uploadDelegate )
     }
}
 
class C {
     func efg (uploadDelegate: UploadDelegate) {
        D().hij(uploadDelegate:uploadDelegate )
      }
}
 
class D {
 
 func hij (uploadDelegate: UploadDelegate) {
           uploadDelegate.func()
    }
}

Can we pass the protocol/delegate as a func parameter? If yes, I believe its a weak property.