>(</span><span class="kt">long</span><span class="w"> </span><span class="n">timestamp</span><span class="p">,</span><span class="w"> </span><span class="n">OnTimerContext</span><span class="w"> </span><span class="n">ctx</span><span class="p">,</span><span class="w"> </span><span class="n">Collector</span><span class="o">&lt;</span><span class="n">OutputType</span><span class="o">&gt;</span><span class="w"> </span><span class="n">out</span><span class="p">)</span><span class="w"> </span><span class="p">{}<