Add collections form into DomCrawler
===

Form now, when i want to make functional testing on a form i am doing this was : 

    $crawler = $this->client->submit($form, array(
    	    'type[category]'  => 'foo',
    	    'type[administrable]'  => '1',
    	));

I thought that to add collections form i ad to do this way : 

    $crawler = $this->client->submit($form, array(
    	    'type[fields][0][length]'  => '5',
    	    'type[fields][0][search]'  => '1',
    	    'type[fields][0][required]'  => '1',
    	));

But it's not working!

Does DomCrawler/Goutte support Collection or it there a specific way to deal with it?