LocationHandler.php

<?php
    public function trashSubtree( $locationId )
    {
        $location = $this->load( $locationId );
        
        // Create new trashed location and remove original location from tree
        $params = (array)$location;
        $params['locationId'] = $locationId;
        // Be sure to not overlap id
        unset( $params['id'] );
        $trashedLocation = $this->backend->create( 'Content\\TrashedLocation', $params );
        // Remove location from tree here

        // Begin recursive call on children, if any
        $directChildren = $this->backend->find( 'Content\\Location', array( 'parentId' => $locationId ) );
        if ( !empty( $directChildren ) )
        {
            foreach ( $directChildren as $child )
            {
                $this->trashSubtree( $child->id );
            }
        }

        return $trashedLocation;
    }