Function get_asset_options 

fn get_asset_options<'a>(
    all_existing_assets: &'a [AssetRef],
    demand: &'a DemandMap,
    agent: &'a Agent,
    commodity: &'a Commodity,
    region_id: &'a RegionID,
    year: u32,
    capacity_limit_factor: Dimensionless,
) -> impl Iterator<Item = AssetRef> + 'a

Get options from existing and potential assets for the given parameters