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    <h1>first property</h1>


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          <span class="returntype">E</span>
          <span class="name ">first</span>
  
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        <section class="desc markdown">
  <p>Returns the first element.</p>
<p>Throws a <a href="dart-core/StateError-class.html">StateError</a> if <code>this</code> is empty.
Otherwise returns the first element in the iteration order