export function addToAllocation(allocation: Allocation, amountKeywordRecord: AmountKeywordRecord): AmountKeywordRecord;
export function subtractFromAllocation(allocation: Allocation, amountKeywordRecord: AmountKeywordRecord): AmountKeywordRecord;
/**
 * An operation such as add or subtract.
 */
export type Operation = (amount: Amount | undefined, diff: Amount | undefined, keyword: Keyword) => Amount;
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