src/vs/editor/common/languages/supports/inplaceReplaceSupport.ts/BasicInplaceReplace/valueSetsReplace
class BasicInplaceReplace:	private valueSetsReplace(valueSets: string[][], value: string, up: boolean): string | null {
		let result: string | null = null;
		for (let i = 0, len = valueSets.length; result === null && i < len; i++) {
			result = this.valueSetReplace(valueSets[i], value, up);
		}
		return result;
	}