def Instant.sub
import bend-time-lib@0.4.0.1/instant.bend as Instantimport Base
import bend-time-lib@0.4.0.1/duration.bend as Dur
146def Instant.sub(
147 i: Instant, d: Dur.Duration
148) -> Result<&2, &2, Instant.Error, Instant>:
149 Instant.of_dur.map(Dur.Duration.sub(Instant.as_dur(i), d))