box" id="theme" value="light-theme">
      <span id="dark-theme-button" class="material-symbols-outlined">
        dark_mode
      </span>
      <span id="light-theme-button" class="material-symbols-outlined">
        light_mode
      </span>
    </label>
  </div>
</header>
<main>
<div
    id="dartdoc-main-content"
    class="main-content"
    data-above-sidebar="public_flutter_sound_player&#47;FlutterSoundPlayer-class-sidebar.html"
    data-below-sidebar="">
    <div>
<h1><span class="kind-method">setSubsc