class="token operator">&gt;</span><span class="token operator">?</span></div><div class="brief "><p class="paragraph">Returns a not empty mutable set containing all the elements of this collection, or returns <code class="lang-kotlin">null</code> if this collection is empty.</p></div></div></div>
              </div>
            </div>
          </div>
        </div>
<a data-name="657192905%2FExtensions%2F-879532132" anchor-label="toNotEmptySet" id="657192905%2FExtensions%2F-879532132" data-filterable-set="