belongsTo(Plant::class); } public function line(): BelongsTo { return $this->belongsTo(Line::class); } public function workGroupMaster(): BelongsTo { return $this->belongsTo(WorkGroupMaster::class); } public function productCharacteristicsMasters() { return $this->hasMany(ProductCharacteristicsMaster::class); } public function characteristicValues() { return $this->hasMany(CharacteristicValue::class); } public function ClassCharacteristics() { return $this->hasMany(ClassCharacteristic::class, 'machine_id', 'id'); } public function testingPanelReadings() { return $this->hasMany(TestingPanelReading::class); } public function equipmentMasters() { return $this->hasMany(EquipmentMaster::class, 'machine_id', 'id'); } }