<ext:UBLExtensions>
        <ext:UBLExtension>
            <ext:ExtensionURI>urn:oasis:names:specification:ubl:dsig:enveloped:xades</ext:ExtensionURI>
            <ext:ExtensionContent>
                <sig:UBLDocumentSignatures xmlns:sig="urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2" xmlns:sac="urn:oasis:names:specification:ubl:schema:xsd:SignatureAggregateComponents-2" xmlns:sbc="urn:oasis:names:specification:ubl:schema:xsd:SignatureBasicComponents-2">
                    <sac:SignatureInformation>
                        <cbc:ID>urn:oasis:names:specification:ubl:signature:1</cbc:ID>
                        <sbc:ReferencedSignatureID>urn:oasis:names:specification:ubl:signature:Invoice</sbc:ReferencedSignatureID>
                        <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="signature">
                            <ds:SignedInfo>
                                <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2006/12/xml-c14n11"/>
                                <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha256"/>
                                <ds:Reference Id="invoiceSignedData" URI="">
                                    <ds:Transforms>
                                        <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
                                            <ds:XPath>not(//ancestor-or-self::ext:UBLExtensions)</ds:XPath>
                                        </ds:Transform>
                                        <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
                                            <ds:XPath>not(//ancestor-or-self::cac:Signature)</ds:XPath>
                                        </ds:Transform>
                                        <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
                                            <ds:XPath>not(//ancestor-or-self::cac:AdditionalDocumentReference[cbc:ID='QR'])</ds:XPath>
                                        </ds:Transform>
                                        <ds:Transform Algorithm="http://www.w3.org/2006/12/xml-c14n11"/>
                                    </ds:Transforms>
                                    <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
                                    <ds:DigestValue></ds:DigestValue>
                                </ds:Reference>
                                <ds:Reference Type="http://www.w3.org/2000/09/xmldsig#SignatureProperties" URI="#xadesSignedProperties">
                                    <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
                                    <ds:DigestValue></ds:DigestValue>
                                </ds:Reference>
                            </ds:SignedInfo>
                            <ds:SignatureValue></ds:SignatureValue>
                            <ds:KeyInfo>
                                <ds:X509Data>
                                    <ds:X509Certificate></ds:X509Certificate>
                                </ds:X509Data>
                            </ds:KeyInfo>
                            <ds:Object>
                                <xades:QualifyingProperties xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" Target="signature">
                                    <xades:SignedProperties Id="xadesSignedProperties">
                                        <xades:SignedSignatureProperties>
                                            <xades:SigningTime></xades:SigningTime>
                                            <xades:SigningCertificate>
                                                <xades:Cert>
                                                    <xades:CertDigest>
                                                        <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
                                                        <ds:DigestValue></ds:DigestValue>
                                                    </xades:CertDigest>
                                                    <xades:IssuerSerial>
                                                        <ds:X509IssuerName></ds:X509IssuerName>
                                                        <ds:X509SerialNumber></ds:X509SerialNumber>
                                                    </xades:IssuerSerial>
                                                </xades:Cert>
                                            </xades:SigningCertificate>
                                        </xades:SignedSignatureProperties>
                                    </xades:SignedProperties>
                                </xades:QualifyingProperties>
                            </ds:Object>
                        </ds:Signature>
                    </sac:SignatureInformation>
                </sig:UBLDocumentSignatures>
            </ext:ExtensionContent>
        </ext:UBLExtension>
    </ext:UBLExtensions>