value; } public function setValue(?float $value): self { $this->value = $value; return $this; } public function getUnit(): ?string { return $this->unit; } public function setUnit(?string $unit): self { $this->unit = $unit; return $this; } public function getBehaviorTaxRate(): ?string { return $this->behaviorTaxRate; } public function setBehaviorTaxRate(?string $behaviorTaxRate): self { $this->behaviorTaxRate = $behaviorTaxRate; return $this; } }