src/Money/DataMapper/Data/Money/Abstracts/TransactionAbstract.php
public function setDate($date)
    {
        $date = (string) $date;

        if ($this->exists() && $this->date !== $date) {
            $this->updated['date'] = true;
        }

        $this->date = $date;

        return $this;
    }
public function setDate($date)
    {
        $date = (string) $date;

        if ($this->exists() && $this->date !== $date) {
            $this->updated['date'] = true;
        }

        $this->date = $date;

        return $this;
    }
Set value for field "transaction_date"

@param  string $date
@return $this