@type t() :: %Alpa.Models.Quote{
  ask_exchange: String.t() | nil,
  ask_price: Decimal.t() | nil,
  ask_size: integer() | nil,
  bid_exchange: String.t() | nil,
  bid_price: Decimal.t() | nil,
  bid_size: integer() | nil,
  conditions: [String.t()] | nil,
  symbol: String.t() | nil,
  tape: String.t() | nil,
  timestamp: DateTime.t() | nil
}