UserModel in Webmethods

I have existing code that has the userModel being used in the CAF bindings. This does not appear to be an IS service or is it? How do I add this to my CAF portal in the bindings view?

public getUserModel() {
if (userModel == null) {
userModel = new;

    resolveDataBinding(USERMODEL_PROPERTY_BINDINGS, userModel, "userModel", false, false);
	return userModel;