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    <p><font size="4">I adapted to your suggestion and it does not work
        with more complex tree of objects.</font></p>
    <p><font size="4">Still the same error with, GZipWriteStream does
        not implement <b>next</b></font></p>
    <p></p>
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      <pre style="margin: 0; line-height: 125%;"><span></span><span
      style="color: #00F">dumpOnCompressedFile:</span> <span
      style="color: #19177C">aFileEntry</span> <span style="color: #00F">object:</span> <span
      style="color: #19177C">anObject</span>
        <span style="color: #3D7B7B; font-style: italic">"Warning: If the file given by aFileEntry exists, it will be overwritten."</span>
        <span style="color: #19177C">aFileEntry</span> <span
      style="color: #00F">forceWriteStreamDo:</span> [ <span
      style="color: #666">:</span><span style="color: #19177C">fileStream</span> <span
      style="color: #666">|</span> <span style="color: #666">|</span><span
      style="color: #19177C"> compressor </span><span
      style="color: #666">|</span>
                <span style="color: #19177C">compressor</span> <span
      style="color: #666">:=</span> <span
      style="color: #00F; font-weight: bold">GZipWriteStream</span> <span
      style="color: #00F">on:</span> <span style="color: #19177C">fileStream</span>.
                (<span style="color: #008000">self</span> <span style="color: #00F">on:</span> <span
      style="color: #19177C">compressor</span>) <span
      style="color: #00F">nextPut:</span> <span style="color: #19177C">anObject</span>.
                <span style="color: #19177C">compressor</span> <span
      style="color: #00F">close</span>]
</pre>
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    <pre class="moz-signature" cols="72">-- 
<a class="moz-txt-link-freetext" href="http://mamot.fr/@drgeo">http://mamot.fr/@drgeo</a></pre>
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