fn validate_flows_and_update_primary_output(
processes: &mut ProcessMap,
flows_map: &HashMap<ProcessID, ProcessFlowsMap>,
milestone_years: &[u32],
) -> Result<()>fn validate_flows_and_update_primary_output(
processes: &mut ProcessMap,
flows_map: &HashMap<ProcessID, ProcessFlowsMap>,
milestone_years: &[u32],
) -> Result<()>