Fixing merge conflict in CR0347

  <xs:import namespace="http://uri.etsi.org/03280/common/2017/07"/>

  <xs:element name="X1Extensions" type="X1Extension"></xs:element>

  <xs:complexType name="X1Extensions">

    <xs:sequence>

      <xs:element name="Extension" type="X1Extension" minOccurs="1" maxOccurs="unbounded"></xs:element>

    </xs:sequence>

  </xs:complexType>

  <xs:element name="PTCLIX1TargetIdentifierExtensions" type="PTCLIX1TargetIdentifierExtensions"></xs:element>

  <xs:complexType name="PTCLIX1TargetIdentifierExtensions">