private static Schema getMockIntObjSchema() throws Exception {
    String schema =
        """
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema version="1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema">\
<xs:element name="mockIntObject" type="mockIntObject"/><xs:complexType name="mockIntObject">\
<xs:sequence><xs:element name="value" type="xs:int"/></xs:sequence></xs:complexType>\
</xs:schema>\
""";
    SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
    return schemaFactory.newSchema(new StreamSource(new StringReader(schema)));
  }
Enabled via {@link feign.Feign.Builder#dismiss404()}
jaxb-jakarta/src/test/java/feign/jaxb/JAXBCodecTest.java