Cake find with limit on relation

find.php

<?php
$this->Client->find('all', array(
  'conditions' => array(
  ),
  'joins' => array(
    array(
      'table' => 'projects',
      'alias' => 'ProjectJoin',
      'type' => 'INNER',
      'conditions' => array(
        'ProjectJoin.client_id = Client.id'
      ),
    ),
  ),
));