Model/User.php
public function setStartDate($startDate)
    {
        if ($startDate instanceof DateTime) {
            $this->startDate = $startDate;
        } else {
            try {
                $this->startDate = new DateTime($startDate);
            } catch (\Exception $e) {
                $this->startDate = null;
            }
        }

        return $this;
    }
public function setStartDate($startDate)
    {
        if ($startDate instanceof DateTime) {
            $this->startDate = $startDate;
        } else {
            try {
                $this->startDate = new DateTime($startDate);
            } catch (\Exception $e) {
                $this->startDate = null;
            }
        }

        return $this;
    }
Sets the "startDate" of the User.

@param DateTime $startDate

@return User