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      <div class="sectiontitle">Instance Public methods</div>
      
        <div class="method">
          <div class="title method-title" id="method-i-bitmask">
            
              <a name="method-i-bitmask"></a><b>bitmask</b>(attribute, options={}, &amp;extension)
            
          </div>
          
          
            <div class="description">
              
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