-annotation"><a href="dart-core/int-class.html">int</a></span> <span class="parameter-name">start</span> = <span class="default-value">0</span>, </span> <span class="parameter" id="unlockSync-param-end"><span class="type-annotation"><a href="dart-core/int-class.html">int</a></span> <span class="parameter-name">end</span> = <span class="default-value">-1</span></span> ])
      
    </section>
    <section class="desc markdown">
      <p>Synchronously unlocks the file or part of the file.</p>
<p>Unlocks the b