an Entity references as follows:
Jakarta XML Registries (JAXR; formerly Java API for XML Registries) defines a standard API for Jakarta EE applications to access and programmatically interact with various kinds of metadata registries. JAXR is one of the Java XML programming APIs. The JAXR API was developed under the Java Community Process as JSR 93. Jakarta XML Registries (JAXR) was removed from Jakarta EE 9.