comment">// modification, are permitted provided that the following conditions are met:</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">//</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment">// 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span cla