 <span class="keyword">class</span> <span class="identifier">Accessor1</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Accessor2</span><span class="special">&gt;</span>
<span class="identifier">object</span> <span class="identifier">range</span><span class="special">(</span><span class="identifier">Accessor1</span> <span class="identifier">start</span><span class="special">,</span> <span class="identifier">Accessor2</span> <span class="identifier">finish</spa