src/Money/DataMapper/Data/Money/Abstracts/BudgetAbstract.php
public function setDateStart($dateStart)
    {
        $dateStart = (string) $dateStart;

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

        $this->dateStart = $dateStart;

        return $this;
    }
public function setDateStart($dateStart)
    {
        $dateStart = (string) $dateStart;

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

        $this->dateStart = $dateStart;

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

@param  string $dateStart
@return $this