src/EB/SDK/RecipientSubscribe/Recipient.php
public function setAsComplaint(\DateTime $complaintDate)
    {
        $this->complaint     = true;
        $this->complaintDate = $complaintDate;

        return $this;
    }
public function setAsComplaint(\DateTime $complaintDate)
    {
        $this->complaint     = true;
        $this->complaintDate = $complaintDate;

        return $this;
    }
Set recipient as complaint
@param \DateTime $complaintDate The recipient complaint date

@return Recipient