public typealias CompletionClosure = (Result<Void, ErrorInfo>) -> Void


// Define a method using ListResultCompletionClosure
func fetchUserList(cursor: String, completion: @escaping ListResultCompletionClosure<User>) {
    // Async operation...
}

// Call the method and handle the Result
fetchUserList(cursor: "") { result in
    switch result {
    case .success(let (users, nextCursor)):
        // Handle success - users is [User], nextCursor is String
        print("Fetched \\(users.count) users, next cursor: \\(nextCursor)")
        for user in users {
            print("User: \\(user.name)")
        }
    case .failure(let error):
        // Handle failure - error is ErrorInfo
        print("Error code: \\(error.code), message: \\(error.message)")
    }
}

// CompletionClosure uses Swift's Result type:
// - .success(Void): Operation succeeded
// - .failure(ErrorInfo): Operation failed
func someAsyncOperation(completion: @escaping CompletionClosure) {
    // Async operation...
}
someAsyncOperation { result in
    switch result {
    case .success:
        print("Operation succeeded")
    case .failure(let error):
        print("Error code: \\(error.code), message: \\(error.message)")
    }
}