X3DMetadataObject

<xs:complexType name="X3DMetadataObject" abstract="true">
  <xs:annotation>
    <xs:appinfo>
      <xs:attribute name="componentName" type="xs:NMTOKEN" fixed="Core"/>
      <xs:attribute name="componentLevel" type="xs:positiveInteger" fixed="1"/>Each node inheriting the X3DMetadataObject interface contains a single array of strictly typed values: MFBool, MFInt32, MFFloat, MFDouble, MFString, or MFNode, the latter having children that are all Metadata nodes.</xs:appinfo>
    <!-- TODO may rename object type to X3DMetadataNode, see mantis issue 686 http://www.web3d.org/member-only/mantis/view.php?id=686 -->
    <xs:documentation source="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/core.html#X3DMetadataObject"/>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="X3DNode">
      <xs:attribute name="name" type="SFString" use="required"/>
      <xs:attribute name="reference" type="SFString"/>
    </xs:extension>
    <!-- cannot require @name field or else USE nodes fail to validate -->
    <!-- cannot add ProtoInstance without causing nondeterminism problems -->
  </xs:complexContent>
</xs:complexType>