agent/taskresource/volume/dockervolume.go
func (vol *VolumeResource) SetCreatedAt(createdAt time.Time) {
	if createdAt.IsZero() {
		return
	}
	vol.lock.Lock()
	defer vol.lock.Unlock()

	vol.createdAtUnsafe = createdAt
}
func (vol *VolumeResource) SetCreatedAt(createdAt time.Time) {
	if createdAt.IsZero() {
		return
	}
	vol.lock.Lock()
	defer vol.lock.Unlock()

	vol.createdAtUnsafe = createdAt
}
// SetCreatedAt sets the timestamp for resource's creation time