Variable: galaFeePropertiesIdentifier

const galaFeePropertiesIdentifier: "galachain" = "galachain"

features like Fees are anticipated to only support $GALA as the currency of choice. Current plans are for all fees to be paid in $GALA. This hardcoded id here gives us something to use as a ChainKey for the properties while keeping it effectively immutable from outside assets-chaincode calls without a code change.

Source

chaincode/src/fees/galaFeeProperties.ts:28