INSERT_BEFORE">INSERT_BEFORE</a></code></td>
<td>
<p>Insert operation on an array of named objects. This operation
is typically useful only in the context of filters or routes,
where the order of elements matter. Routes should be ordered
based on most to least specific matching criteria since the
first matching element is selected. For clusters and virtual hosts,
order of the element in the array does not matter. Insert
before the selected filter or sub filter. If no filter is
selected, the specified filter