callback() :: Tai.Orders.OrderCallback.callback()

product_type() :: Tai.Venues.Product.type()

t() :: %Tai.Orders.Submissions.BuyLimitGtc{
  close: boolean() | nil,
  credential: String.t(),
  order_updated_callback: callback() | nil,
  post_only: boolean(),
  price: Decimal.t(),
  product_symbol: String.t(),
  product_type: product_type(),
  qty: Decimal.t(),
  venue: String.t(),
  venue_product_symbol: String.t()
}