Branch logic at first step doesn't work

[yarkm13]

Is it impossible to use branch mechanism at first step?

I can't figure out how to do it. I just need to skip first step in particular condotion.

My variants:

public function beforeFilter() {
    $this->Wizard->steps = array(array('childs' => array('child')), 'details', 'template', 'invite', 'message');
    $this->Wizard->defaultBranch = false;
}


public function wizard($step = null) {
    $this->Wizard->branch('childs', true);
    $this->Wizard->process($step); 
} 

Doesn't work. (error incorrect step. But if i returns to /wizard all goes correctly)

public function beforeFilter() {
    $this->Wizard->steps = array(array('family' => array('details'), 'childs' => array('child', 'details')), 'template', 'invite', 'message');
    //$this->Wizard->defaultBranch = false;
}

doesnt work after adding

public function wizard($step = null) {
    $this->Wizard->branch('childs');
    $this->Wizard->process($step); 
} 

but works without $this->Wizard->branch('childs');

How can i got this work?