UnderlyingPaymentStreamPaymentRollConvention

The convention for determining the sequence of end dates. It is used in conjunction with a specified frequency. Used only to override the roll convention specified in the UnderlyingDateAdjustment component within the UnderlyingInstrument component.确定终止日期序列的惯例。此惯例与特定频率相结合使用。仅用于覆盖在基础工具组件中的基础日期调整组件内指定的滚动惯例。