ic
       construct/copy/destruct</h3>
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<pre class="literallayout"><a name="idp51512336-bb"></a><span class="identifier">basic_environment</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Default constructor. </li>
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<pre class="literallayout"><a name="idp51512848-bb"></a><span class="identifier">basic_environment</span><span class="special">(</span><span c