/**
 * Indicates order settlement period for the underlying instrument.
 * tag: 975
 * @readonly
 * @enum {number} (int)
 */
export declare enum UnderlyingSettlementType {
    /** T+1 */
    TPlus1 = 2,
    /** T+3 */
    TPlus3 = 4,
    /** T+4 */
    TPlus4 = 5
}