code: def cancel_instruction(bet_id, size_reduction=None):
      
      args = locals()
      return {
          to_camel_case(k): v for k, v in args.items() if v is not None
      }
docs: Instruction to fully or partially cancel an order (only applies to LIMIT orders)
      :param str bet_id: identifier of the bet to cancel.
      :param float size_reduction: If supplied then this is a partial cancel.
  
      :returns: cancellation report detailing status, cancellation requested and actual cancellation details.
      :rtype: dict