code: function (sDetails) {
  				if (this._bMessageOpen) {
  					return;
  				}
  				this._bMessageOpen = true;
  				MessageBox.error(
  					this._sErrorText,
  					{
  						id : "serviceErrorMessageBox",
  						details : sDetails,
  						styleClass : this._oComponent.getContentDensityClass(),
  						actions : [MessageBox.Action.CLOSE],
  						onClose : function () {
  							this._bMessageOpen = false;
  						}.bind(this)
  					}
  				);
  			}
docs: Shows a {@link sap.m.MessageBox} when a service call has failed.
  Only the first error message will be display.
  @param {string} sDetails a technical error to be displayed on request
  @private