t() :: %ExDeribit.Position{
  average_price: number(),
  delta: number(),
  direction: String.t(),
  estimated_liquidation_price: number(),
  floating_profit_loss: number(),
  index_price: number(),
  initial_margin: number(),
  instrument_name: String.t(),
  kind: String.t(),
  leverage: number(),
  maintenance_margin: number(),
  mark_price: number(),
  open_orders_margin: number(),
  realized_profit_loss: number(),
  settlement_price: number(),
  size: number(),
  size_currency: number(),
  total_profit_loss: number()
}