net.corda.core.utilities.kotlin.Int

days	`val Int.days: Duration` Extension method for easier construction of Durations in terms of integer days: `val twoDays = 2.days`.
exactAdd	`infix fun Int.exactAdd(b: Int): Int` Like the + operator but throws ArithmeticException in case of integer overflow.
hours	`val Int.hours: Duration` Extension method for easier construction of Durations in terms of integer hours: `val twoHours = 2.hours`.
millis	`val Int.millis: Duration` Extension method for easier construction of Durations in terms of integer milliseconds: `val twoMillis = 2.millis`.
minutes	`val Int.minutes: Duration` Extension method for easier construction of Durations in terms of integer minutes: `val twoMinutes = 2.minutes`.
seconds	`val Int.seconds: Duration` Extension method for easier construction of Durations in terms of integer seconds: `val twoSeconds = 2.seconds`.