credential_id() :: Tai.Venue.credential_id()
fee_type() :: :percent
symbol() :: Tai.Venues.Product.symbol()
t() :: %Tai.Venues.FeeInfo{ credential_id: credential_id(), maker: Decimal.t(), maker_type: fee_type(), symbol: symbol(), taker: Decimal.t(), taker_type: fee_type(), venue_id: venue_id() }
venue_id() :: Tai.Venue.id()