title: SAPui5 table multiLables and multiSorting
body: <p>I'm developing in SAPui5 one table, and have 1 column with 2 data in one cell (product name &amp; company).
  I use the multiLables option for show the title, but I need for each title one sort function.
  Is that possible?</p>
  
  <p>This is my code:</p>
  
  <pre><code>//Create an instance of the table control
      var oTable2 = new sap.ui.table.Table('table1',{
          visibleRowCount: 12,
          selectionMode: sap.ui.table.SelectionMode.Single,
          navigationMode: sap.ui.table.NavigationMode.Paginator,
          editable: false,
      });
  
      //Define the columns and the control templates to be used
      oTable2.addColumn(new sap.ui.table.Column('colkag', {
          visible: false,
          label: new sap.ui.commons.Label({text: "kag"}),
          template: "kag",
          sortProperty: "kag",
          filterProperty: "kag",
      }));
      oTable2.addColumn(new sap.ui.table.Column('colname', {
          multiLabels: [
              new sap.ui.commons.Label({text: "Fondsname"}), 
              new sap.ui.commons.Label({text: "Verwaltungsgesellschaft"}) ],
          template: new sap.m.ObjectIdentifier({title:"{name}", text:"{kag}"}),
          sortProperty: "name",
          filterProperty: "name",
          width: "400px"
      }));
  </code></pre>
  
  <p>And this is the result:</p>
  
  <p><img src="https://i.stack.imgur.com/sywmn.png" alt="table with multiLables"></p>