ec.index" class="anchor"></a><code><span>index : <span>int option</span>;</span></code><div class="def-doc"><span class="comment-delim">(*</span><p>index of the returned source if Some; return value if None</p><span class="comment-delim">*)</span></div></li></ol><code><span>}</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-get"><a href="#val-get" class="anchor"></a><code><span><span class="keyword">val</span> get : 
  <span><span class="label">caller_pname</span>:<a 