@type t() :: %Bingex.Swap.ContractInfo{
  asset: binary(),
  closing_status: binary(),
  contract_id: term(),
  currency: binary(),
  guaranteed_stop_fee_rate: binary(),
  guaranteed_stop_status: boolean(),
  launch_time: non_neg_integer(),
  maintain_time: non_neg_integer(),
  maker_fee_rate: float(),
  min_quantity: float(),
  min_quote_amount: float(),
  off_time: non_neg_integer(),
  opening_status: binary(),
  price_precision: integer(),
  quantity_precision: integer(),
  status: contract_status(),
  symbol: binary(),
  taker_fee_rate: float(),
  transactions_status: boolean()
}

Contract (market) information.

Fields:

• contract_id (binary): Unique identifier for the contract.
• symbol (binary): Trading pair symbol (e.g., "BTC-USDT").
• quantity_precision (integer): Precision of order quantity.
• price_precision (integer): Precision of price values.
• taker_fee_rate (float): Taker fee rate as a percentage.
• maker_fee_rate (float): Maker fee rate as a percentage.
• min_quantity (float): Minimum order quantity.
• min_quote_amount (float): Minimum order value in quote currency.
• currency (binary): Settlement currency (e.g., "USDT").
• asset (binary): Base asset of the contract.
• status (contract_status()): Current contract status (:online, :pre_online, :offline, :forbidden).
• opening_status (boolean): Whether trading is open.
• closing_status (boolean): Whether closing of positions is allowed.
• guaranteed_stop_status (boolean): Whether guaranteed stop-loss is available.
• guaranteed_stop_fee_rate (float): Fee rate for guaranteed stop-loss.
• transactions_status (boolean): Whether contract transactions are enabled.
• launch_time (non_neg_integer): Timestamp of contract launch.
• maintain_time (non_neg_integer): Timestamp of next maintenance.
• off_time (non_neg_integer): Timestamp when contract will be taken offline.