
<code>template&lt;typename Tag,typename IteratorType><br>
typename index&lt;Tag>::type::iterator project(IteratorType it);</code>

<blockquote>
<b>Requires:</b> <code>Tag</code> is such that
<code>index&lt;Tag>::type</code> is valid. <code>IteratorType</code>
belongs to <code>iterator_type_list</code>. <code>it</code> is a valid
iterator of some index of <code>*this</code> (i.e. does not refer to some
other <code>multi_index_container</code>.)<br>
<b>Effects:</b> Returns an <code>index&lt;Tag>::type::itera