an>
    <span class="n">CardSchemeNone</span>                          <span class="o">=</span> <span class="mi">0</span><span class="p">,</span>
    <span class="n">CardSchemeAmex</span>                          <span class="o">=</span> <span class="mi">1</span> <span class="o">&lt;&lt;</span> <span class="mi">0</span><span class="p">,</span>
    <span class="n">CardSchemeVisa</span>                          <span class="o">=</span> <span class="mi">1</span> <span class="o">&lt;&lt;</span> <span class="mi"