//! [`RegistryIdentifiers`] — the persistent identifiers a registration carries.
use ;
/// The persistent identifiers a registration carries. Specified by ESPR
/// **Annex III** (product (b), operator (g)/(h), facility (i)); Art. 13 is the
/// registry that stores them, not their definition.
///
/// Every product registered in the EU Central Registry receives four
/// identifiers that persist throughout its lifecycle, even across
/// ownership transfers.