age container which has the @ref empty_body body type.
                </p>
                <p>
                  @see empty_body
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="literal">need_buffer</code>
                </p>
              </td>
<td>
                <p>
                  Additional buffers are required.
                </p>
                <p>
                  This error is returned under the following conditions:
               