@tanstack/aifunctionstoSpecTokenUsage이 페이지에서함수: toSpecTokenUsage() function toSpecTokenUsage(usage, options?): object; 정의 위치: packages/ai/src/utilities/ag-ui-usage.ts:47 매개변수 usage TokenUsage options? ToSpecTokenUsageOptions 반환값 object leftover? optional leftover?: TokenUsageLeftover; usage usage: SpecTokenUsage[];