title: Is there a way to insert Checkbox and Combobox in Sidebar in SAPUI5?
body: <p>I have created a tnt Sidebar and want to insert Checkboxes and Combobox in it.</p>
  <p>This should be the result:</p>
  <p><a href="https://i.stack.imgur.com/eCCYt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eCCYt.png" alt="enter image description here" /></a></p>
  <p>Currently it looks like this:</p>
  <p><a href="https://i.stack.imgur.com/1j35L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1j35L.png" alt="enter image description here" /></a></p>
  <p>So the NavigationItems should be replaced by Checkboxes. f.E. sap.m.CheckBox</p>
  <pre><code> &lt;content&gt;
          &lt;tnt:ToolPage&gt;
              &lt;tnt:sideContent&gt;
                  &lt;tnt:SideNavigation  id=&quot;sideNavigation&quot; selectedKey=&quot;subItem3&quot;&gt;
                      &lt;tnt:NavigationList&gt;
                          &lt;tnt:NavigationListItem text=&quot;Item 1&quot; icon=&quot;sap-icon://employee&quot;&gt;
                              &lt;tnt:NavigationListItem  text=&quot;Sub Item 1&quot; &gt;
                              &lt;/tnt:NavigationListItem&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 2&quot; /&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 3&quot; id=&quot;subItem3&quot; key=&quot;subItem3&quot; /&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 4&quot; /&gt;
                          &lt;/tnt:NavigationListItem&gt;
                          &lt;tnt:NavigationListItem text=&quot;Item 2&quot; icon=&quot;sap-icon://building&quot;&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 1&quot; /&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 2&quot; /&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 3&quot; /&gt;
                              &lt;tnt:NavigationListItem text=&quot;Sub Item 4&quot; /&gt;
                          &lt;/tnt:NavigationListItem&gt;
                      &lt;/tnt:NavigationList&gt;
  </code></pre>
  <p>I tried to insert a sap.m.CheckBox instead of a normal NavigationListItem but then I get an error, that the &quot;CheckBox&quot; class is under the &quot;items&quot; aggregation and must match the &quot;NavigationListItem&quot; type.</p>
  <p>I know Fiori/UI5 is limited somehow and you shouldn't mix up too much different namespaces, but is there some workaround?</p>
  <p>Kind regards
  Sebastian</p>