aram-pattern"><span class="type-annotation"><a href="dart-core/Pattern-class.html">Pattern</a></span> <span class="parameter-name">pattern</span>, [</span> <span class="parameter" id="startsWith-param-index"><span class="type-annotation"><a href="dart-core/int-class.html">int</a></span> <span class="parameter-name">index</span> = <span class="default-value">0</span></span> ])
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        