fore_write_xml</span><span
              class="method-args">()</span>
            <span class="method-click-advice">click to toggle source</span>
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        <div class="method-description">
          

          <div class="method-source-code" id="before_write_xml-source">
            <pre><span class="ruby-comment"># File lib/rubyXL/objects/content_types.rb, line 30</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">before_write_xml</span>
 