a></span><span class="signature">&lt;<wbr><span class="type-parameter">R</span>&gt;</span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="dart-core/Set-class.html">Set</a><span class="signature">&lt;<wbr><span class="type-parameter">R</span>&gt;</span></span>
          </span>
                  </dt>
        <dd class="inherited">
          Provides a view of this set as a set of <code>R</code> instances. <a href="dart-core/Set/cast.html">[...]</a>
           