<p> This class defines a covariant version of <code>equals()</code>.&nbsp;
  To correctly override the <code>equals()</code> method in
  <code>java.lang.Object</code>, the parameter of <code>equals()</code>
  must have type <code>java.lang.Object</code>.</p>

<p>
This rule is deprecated, use {rule:squid:S1201} instead.
</p>