s="sd">  Base class for most other sg classes, representing objects with copy and same methods.</span>

<span class="sd">  The &quot;same&quot; method indicates when Named objects are &quot;the same&quot;, namely when their &quot;name&quot; attribute is the same. This method coincides with the &quot;weaksame&quot; method. &quot;Weaksame&quot; is generally a weaker condition in the derived classes. The &quot;same&quot; method allows the implementation of the &quot;samein&quot; and &quot;sameindex&quot; metho