readVariantData(decoder, visitor, nodeId);
        } else {
            readVariantReference(decoder, visitor, nodeId);
        }
    }

    private void readVariantReference(Decoder decoder, ResolvedComponentVisitor visitor, long nodeId) throws IOException {
        VariantGraphResolveState variant = readVariantReference(decoder);
        ResolvedVariantResult externalVariant;
        if (decoder.readBoolean()) {