date = clone $date; } public function getDate(): \DateTimeInterface { return $this->date; } public function getBillableDuration(): int { return $this->billableDuration; } public function setBillableDuration(int $billableDuration): void { $this->billableDuration = $billableDuration; } public function getBillableRate(): float { return $this->billableRate; } public function setBillableRate(float $billableRate): void { $this->billableRate = $billableRate; } }