title: Validations for DatePicker control in SAP UI5
body: <p>I am using DatePicker control from sap.ui.commons library.
  I want to add validations to this date. What can be the best possible way to have validations apart from implementing change method ?</p>
  
  <p>Is it possible for the framework to popup the error message in the red color as we get to see in some standard form?</p>
  
  <p>Any help will be appreciated.</p>
  
  <p>Thanks</p>