Constructs an empty operation group; populate it through the setters.
The account identifier, or undefined.
Sets the account identifier.
Accepts an AccountId object or a number | bigint | string.
Throws AccountIdError on an invalid identifier value.
The settlement asset, or undefined.
The trading side wire string ("BUY"/"SELL"), or undefined.
The underlying asset, or undefined.
Returns a deep copy of this operation group.
Execution-report operation group: instrument, account, and side.