# Variables
ErrFundingRateOutsideLimits is returned when a funding rate is outside the allowed date range.
ErrNoFundingRatesFound is returned when no funding rates are found.
ErrPaymentCurrencyCannotBeEmpty is returned when a payment currency is not set.
# Structs
HistoricalRates is used to return funding rate details for a position.
HistoricalRatesRequest is used to request funding rate details for a position.
LatestRateRequest is used to request the latest funding rate.
LatestRateResponse for when you just want the latest rate.
Rate holds details for an individual funding rate.