# Functions
CheckFromAddressesExist returns an error if and only if one of the addresses in the VRF spec's fromAddresses field does not exist in the keystore.
CheckFromAddressMaxGasPrices checks if the provided gas price in the job spec gas lane parameter matches what is set for the provided from addresses.
FromAddressMaxGasPricesAllEqual returns true if and only if all the specified from addresses in the fromAddresses field of the VRF v2 job have the same key-specific max gas price.