.
Please read the Introduction page on <a href="../../intro/extensions.html">Extensions</a> for how to override methods and how to call this base method.</p>
</div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><h5><span class="tsd-kind-parameter">x</span>: <span class="tsd-signature-type">number</span></h5></li><li><h5><span class="tsd-kind-parameter">y</span>: <span class="tsd-signature-type">number</span></h5></li></ul></div><h4 class="tsd-r