duration
The size of the trailing window to calculate Spend Velocity over in seconds. The minimum value is 10 seconds, and the maximum value is 2678400 seconds (31 days).
fun duration(duration: JsonField<Long>): VelocityLimitParamsPeriodWindow.TrailingWindowObject.Builder
Sets Builder.duration to an arbitrary JSON value.
You should usually call Builder.duration with a well-typed Long value instead. This method is primarily for setting the field to an undocumented or not yet supported value.