class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4></li></ul></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4></li></ul></section><section class="tsd-panel tsd-member"><a id="addVertex" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>add<wbr/>Vertex</span><a href="#addVertex" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg