title: Eslint : sap-no-ui5-prop-warning
body: <p>I want to remove the ESLint warnings.
  I got <code>sap-no-ui5-prop-warning</code> because I used <code>this.getModel().oData["ProductSet('" + sId+ "')"].Matricule</code>. But when I use the function <code>getData()</code>, it returns null.</p>
  
  <p>Do you have a suggestion how to fix this?</p>