src/FACTFinder/Data/CampaignIterator.php
public function getFeedback($label)
    {
        $feedback = array();
        foreach ($this as $campaign)
            if ($campaign->hasFeedback($label))
                $feedback[] = $campaign->getFeedback($label);

        return implode(PHP_EOL, $feedback);
    }
public function getFeedback($label)
    {
        $feedback = array();
        foreach ($this as $campaign)
            if ($campaign->hasFeedback($label))
                $feedback[] = $campaign->getFeedback($label);

        return implode(PHP_EOL, $feedback);
    }
Returns all feedback texts for the given label, concatenated with
PHP_EOL.

@see Campaign::getFeedback()
@param string $label
@return string