Entity/Customer.php
public function addHistory(\Miky\Bundle\UserBundle\Entity\History $history)
    {
        $this->history[] = $history;

        return $this;
    }
public function addHistory(\Miky\Bundle\UserBundle\Entity\History $history)
    {
        $this->history[] = $history;

        return $this;
    }
Add history

@param \Miky\Bundle\UserBundle\Entity\History $history

@return Customer