id; } public function getCandidate(): Candidate { return $this->candidate; } public function setCandidate(Candidate $candidate): static { $this->candidate = $candidate; return $this; } public function getQuiz(): Quiz { return $this->quiz; } public function setQuiz(Quiz $quiz): static { $this->quiz = $quiz; return $this; } public function getAmount(): ?float { return $this->amount; } public function setAmount(float $amount): static { $this->amount = $amount; return $this; } }