id; } public function getLayerName(): ?string { return $this->layerName; } public function getUnitName(): ?string { return $this->unitName; } public function setLayerName(?string $layerName): self { $this->layerName = $layerName; return $this; } public function setUnitName(?string $unitName): self { $this->unitName = $unitName; return $this; } }