if (v instanceof NullMetadata) {
return null;
} else if (v instanceof ComponentMetadata) {
return createRecipe((ComponentMetadata) v);
} else if (v instanceof ValueMetadata) {
ValueMetadata stringValue = (ValueMetadata) v;
Object type = stringValue.getType();
type = (type == null) ? groupingType : type;
ValueRecipe vr = new ValueRecipe(getName(null), stringValue, type);
return vr;
} else if (v instanceof RefMetadata) {
// TODO: make it work with property-placeholders?