Method that creates a custom PartsListRow. The newly created PartsListRow is returned.
| Name | Type | Description |
| TargetIndex | Long | Optional input Long that specifies the existing row next to which the new row will be inserted. The valid range of values is 0 to the number of existing rows in the table. A value of 0 will put the row at the end. If not specified, a default value of 0 is used, indicating that the row will be added at the end. This is an optional argument whose default value is 0. |
| InsertBefore | Boolean | Optional input Boolean indicating if the row should be inserted before or after the target index. If not specified, a default value of True is used. This argument is ignored if the value of TargetIndex is 0. This is an optional argument whose default value is True. |