async checkCompleted() {
			if (Messaging.getMessageModel().getData().length > 0) {
				MessageBox.error((await this.requestResourceBundle()).getText("popOverMessageText"));
			} else {
				this.byId("wizardNavContainer").to(this.byId("summaryPage"));
			}
		}
Called from  Wizard on <code>complete</code>
Navigates to the summary page in case there are no errors