Update Profile Picture and Display Name in Firebase User

UpdateProfileInfo.swift

func updateProfileInfo(withImage image: Data? = nil, name: String? = nil, _ callback: ((Error?) -> ())? = nil){
    guard let user = Auth.auth().currentUser else {
        callback?(nil)
        return
    }

    if let image = image{
        let profileImgReference = Storage.storage().reference().child("profile_pictures").child("\(user.uid).png")

        _ = profileImgReference.putData(image, metadata: nil) { (metadata, error) in
            if let error = error {
                callback?(error)
            } else {                    
                profileImgReference.downloadURL(completion: { (url, error) in
                    if let url = url{
                        self.createProfileChangeRequest(photoUrl: url, name: name, { (error) in
                            callback?(error)
                        })
                    }else{
                        callback?(error)
                    }
                })
            }
        }
    }else if let name = name{
        self.createProfileChangeRequest(name: name, { (error) in
            callback?(error)
        })
    }else{
        callback?(nil)
    }
}