in src/main/java/org/apache/maven/plugins/ear/ResourceRef.java [70:82]
public ResourceRef(String name, String type, String auth, String lookupName) {
if (name == null || name.isEmpty()) {
throw new IllegalArgumentException(
RESOURCE_REF_NAME + " in " + RESOURCE_REF_NAME + " element cannot be null.");
} else if ((type == null || type.isEmpty()) && (auth == null || auth.isEmpty())) {
throw new IllegalArgumentException(RESOURCE_TYPE + " in " + RESOURCE_REF_NAME + " element cannot be null ");
}
this.name = name;
this.type = type;
this.auth = auth;
this.lookupName = lookupName;
}