+ <xs:element ref="tns:label-restrictions" minOccurs="0"/>
+ <xs:element ref="tns:unis" minOccurs="0"/>
+ <xs:element ref="tns:te-link-attributes" minOccurs="0"/>
+ <xs:element ref="tns:interlayer-attachments" minOccurs="0"/>
+ <xs:element ref="tns:tunnel-termination-points" minOccurs="0"/>