e that returns <code>true</code> if its two arguments
    are equivalent; otherwise, <code>false</code>.
<strong>Returns:</strong> <code>true</code> if the initial elements of the sequence are equivalent
  to the elements of <code>possiblePrefix</code>; otherwise, <code>false</code>. If
  <code>possiblePrefix</code> has no elements, the return value is <code>true</code>.</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func starts&lt;PossiblePrefix&gt;(with possiblePrefix: PossiblePrefix, 