Identify the subscriber

Glassfy.permissions { [weak self] permissions, err in
  if let permissions=permissions {
      let subscriberID = permissions.subscriberId ?? ""
      let installationID = permissions.installationId ?? ""
      [...]
  }
}

Glassfy permissionsWithCompletion:^(GYPermissions *permissions, NSError *error) {
  if (permissions != nil) {
    NSString *subscriberId = permissions.subscriberId;
    NSString *installationId = permissions.installationId;
    [...]
  }
}

try {
  var permission = await Glassfy.permissions();
  var subscriberId = permission.subscriberId;
  var installationId = permission.installationId;
} catch (e) {
  // error
  [...]
}

try {
  const permissions = await Glassfy.permissions()
  const installationId = permissions.installationId;
  const subscriberId = permissions.subscriberId;
} catch (e) {
  // error
  [...]
}

try {
  const permissions = await Glassfy.permissions()
  const installationId = permissions.installationId;
  const subscriberId = permissions.subscriberId;
} catch (e) {
  // error
  [...]
}

Glassfy.permissions { permissions, error ->
    val subscriberId = permissions?.subscriberId
    val installationId = permissions?.installationId
    [...]
  }

Glassfy.permissions(new PermissionsCallback() {
  @Override
  public void onResult(@Nullable Permissions result, @Nullable GlassfyError error) {
    if (result != null) {
      String installationID = result.getInstallationId();
      String subscriberID = result.getSubscriberId();
      [...]
    }
  }
});

Glassfy.connectCustomSubscriber("my_custom_identifier") { error in
    // handle error.
}

[Glassfy connectCustomSubscriber:@"my_custom_identifier" withCompletion:nil];

await Glassfy.connectCustomSubscriber("my_custom_identifier");

await Glassfy.connectCustomSubscriber('my_custom_identifier');

await Glassfy.connectCustomSubscriber({ subscriberId: 'my_custom_identifier' });

Glassfy.connectCustomSubscriber("my_custom_identifier") { error ->
    // handle error.
}

Glassfy.connectCustomSubscriber("my_custom_identifier", new ErrorCallback() {
    @Override
    public void onResult(@Nullable GlassfyError error) {
        // handle error.   
    }
});