[stable since 2013] a lib for loading XML Schema Definition (XSD) files ➜ plus, a tool `makepkg` to code-generate from any *.xsd your Go package with all needed `struct`s to readily `xml.Unmarshal()` documents into, based on the XSD's schema definitions. NOT REALLY MAINTAINED FOR YEARS NOW: try the forks if running into issues.
urn:ietf:params:xml:schema:eppcom-1.0 is part of the IETF schemas (https://www.iana.org/assignments/xml-registry/xml-registry.xhtml#schema). The XML Schema file can be found at https://www.iana.org/assignments/xml-registry/schema/eppcom-1.0.xsd but it fails to compile: