Model that describes a tech map operation.
| Name | Type | Description |
|---|---|---|
| document_id | Int64 | Tech map ID. |
| id | Int64 | Operation ID. |
| item | Item | Item. |
| last_update | Int64 | Record last modification time as Unix time. |
| part_cost | Decimal | Percentage component in the item cost. Used only for disassembly tech map documents. |
| quantity | Decimal | Item quantity. |