to construct a useful
string representation of the <a class="reference external" href="reference-Alerts.html#alert">alert</a> and the event or data it represents.
Something convenient to put in a log file for instance.</p>
<p><tt class="docutils literal">clone()</tt> is used internally to copy alerts. The suggested implementation
of simply allocating a new instance as a copy of <tt class="docutils literal">*this</tt> is all that's
expected.</p>
<p>The static category is required for checking whether or not 