s case, one or more
          <code>&lt;cc:attribute&gt;</code> elements are included
          in the usage contract and those parameters are referred to in
          the <code>&lt;cc:implementation&gt;</code> section
          using EL expressions like
          <code>#{cc.attrs.usernameLabel}</code>,
          assuming <code>usernameLabel</code> is the <code>name</code>
          of one of the <code>&lt;cc:attribute&gt;</code>
          elements in the usage contract.</p>

          </li>


	  <li><p>Add