def exclude(self, scheduled_operation: ScheduledOperation) -> bool:
        """Omits a scheduled operation from the schedule, if present.

        Args:
            scheduled_operation: The operation to try to remove.

        Returns:
            True if the operation was present and is now removed, False if it
            was already not present.
        """
        try:
            self.scheduled_operations.remove(scheduled_operation)
            return True
        except ValueError:
            return False
Omits a scheduled operation from the schedule, if present.

        Args:
            scheduled_operation: The operation to try to remove.

        Returns:
            True if the operation was present and is now removed, False if it
            was already not present.