//! `trade` WebSocket channel helpers.
use crateArg;
/// Subscribe to `orders` for one instrument type.
///
/// OKX docs: <https://www.okx.com/docs-v5/en/#order-book-trading-trade-ws-order-channel>
/// Subscribe to `fills` for one instrument type.
///
/// OKX docs: <https://www.okx.com/docs-v5/en/#order-book-trading-trade-ws-fills-channel>