 between this instance and another matching <a href="/api/synchronizers/interfaces/synchronizer/synchronizer/"><code>Synchronizer</code></a>.</p><pre><code><span class="function"><a href="/api/synchronizer-broadcast-channel/interfaces/synchronizer/broadcastchannelsynchronizer/methods/synchronization/stopsync/">stopSync</a></span><span class="punctuation">(</span><span class="punctuation">)</span><span class="operator">:</span> <span class="builtin">Promise</span><span class="operator">&lt;</span><span class