Function required_material

crates/openshell-server/src/provider_refresh.rs:663–666

(material: &HashMap<String, String>, key: &str)

}

fn required_material(material: &HashMap<String, String>, key: &str) -> Result<String, Status> {
    material_value(material, &[key])
        .ok_or_else(|| Status::invalid_argument(format!("{key} material is required")))
}

fn material_value(material: &HashMap<String, String>, keys: &[&str]) -> Option<String> {
    for key in keys {