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    <h5>SideBarContentState class</h5>
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      <li class="inherited"><a href="pages_SideBarContent/SideBarContentState/deactivate.html">deactivate</a></li>
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    <h1>deactivate method</h1>

    <section class="multi-line-signature">
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        <ol class="annotation-list">
          <li>@protected</li>
          <li>@mustCallSuper</li>
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      <span class="returntype">void</span>
      <span class="name ">deactivate</span>
(<wbr>)
      <div class="features">@mustCallSuper, @protected, inherited</div>
    </section>
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      <p>Called when this object is removed from the tree.</p>
<p>The framework calls this method whenever it removes this <code>State</code> object
from the tree. In some cases, the framework will reinsert the <code>State</code>
object into another part of the tree (e.g., if the subtree containing this
<code>State</code> object is grafted from one location in the tree to another). If
that happens, the framework will ensure that it calls <a href="pages_SideBarContent/SideBarContentState/build.html">build</a> to give the
<code>State</code> object a chance to adapt to its new location in the tree. If
the framework does reinsert this subtree, it will do so before the end of
the animation frame in which the subtree was removed from the tree. For
this reason, <code>State</code> objects can defer releasing most resources until the
framework calls their <a href="pages_SideBarContent/SideBarContentState/dispose.html">dispose</a> method.</p>
<p>Subclasses should override this method to clean up any links between
this object and other elements in the tree (e.g. if you have provided an
ancestor with a pointer to a descendant's <code>RenderObject</code>).</p>
<p>If you override this, make sure to end your method with a call to
super.deactivate().</p>
<p>See also <a href="pages_SideBarContent/SideBarContentState/dispose.html">dispose</a>, which is called after <a href="pages_SideBarContent/SideBarContentState/deactivate.html">deactivate</a> if the widget is
removed from the tree permanently.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span> </h2>
      <pre class="language-dart"><code class="language-dart">@protected
@mustCallSuper
void deactivate() { }</code></pre>
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