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  <dt><pre><span class="Keyword">proc</span> <a href="#bufLen%2CAsyncStream"><span class="Identifier">bufLen</span></a><span class="Other">(</span><span class="Identifier">self</span><span class="Other">:</span> <a href="asynciochilds.html#AsyncStream"><span class="Identifier">AsyncStream</span></a><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">int</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</spa