-m&quot;, &quot;model&quot;, &quot;-v3&quot;};</span>
<a name="l00164"></a>00164   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> open(<span class="keywordtype">int</span> argc,  <span class="keywordtype">char</span>** argv) = 0;
<a name="l00165"></a>00165 
<a name="l00166"></a>00166   <span class="comment">// open model with parameter arg, e.g. arg = &quot;-m model -v3&quot;;</span>
<a name="l00167"></a>00167   <span class="keyword">virtual</span> <span class="keywordtype">bool<