the following types:
<ol>
  <li><code>Value</code> is the type of the elements contained. <code>Value</code> must be
      <code>Erasable</code> from <code>multi_index_container</code>.
  </li>
  <li><code>IndexSpecifierList</code> specifies the indices that the
    <code>multi_index_container</code> is composed of. It must be a non-empty
    <a href="../../../../libs/mpl/doc/refmanual/forward-sequence.html">
    <code>MPL Forward Sequence</code></a> (and, preferrably,
    an <a href="../../../../libs/mpl/d