riptionDuration</span> method 
</h1></div>

    <section class="multi-line-signature">
      
<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-core/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter">void</span>&gt;</span></span>
<span class="name ">setSubscriptionDuration</span>(<wbr><ol class="parameter-list single-line"> <li><span class="parameter" id="setSubscriptionDuration-param-duration"><span class="type-annotation"><a href="https://api.fl