code: function (sControlId, sFragmentId) {
  			if (sFragmentId) {
  				return sap.ui.getCore().byId(sFragmentId + "--" + sControlId);
  			}
  			return sap.ui.getCore().byId(sControlId);
  		}
docs: Gets the instance of the control. If context such as fragment is provided the
  function will search for id in provided context. If context is not provided the standard
  @param {string} sControlId The id of the searched control.
  @param {string} sFragmentId The id of the context where the searched control is located.
  @private