pub fn from_operation(op: &OperationItem, now: Instant) -> Vec<Execution>Expand description
History from GetOperationsByCursor: BUY/SELL operations, one Execution per trade.
broker_order_id is the operation id (the history has no order id), cid is None, the
operation commission is spread over its trades in proportion to quantity. Quantities are in
pieces here, unlike the lots of the live stream.