func (i *Image) makeStaleIfDependingOn(target *Image) {
	if i.stale {
		return
	}
	if i.dependsOn(target) {
		i.makeStale()
	}
}
func (i *Image) makeStaleIfDependingOn(target *Image) {
	if i.stale {
		return
	}
	if i.dependsOn(target) {
		i.makeStale()
	}
}
func ( i * Image ) makeStaleIfDependingOn ( target * Image ) { if i . stale { return } if i . dependsOn ( target ) { i . makeStale ( ) } }
// makeStaleIfDependingOn makes the image stale if the image depends on target.
makeStaleIfDependingOn makes the image stale if the image depends on target .