pub fn refresh_plan(
targets: &[TargetId],
cooldown: DurationNs,
last_refresh_at: Option<TimestampNs>,
) -> Result<RefreshExecutionPlan, RefreshPlanError>pub fn refresh_plan(
targets: &[TargetId],
cooldown: DurationNs,
last_refresh_at: Option<TimestampNs>,
) -> Result<RefreshExecutionPlan, RefreshPlanError>