GeometryContentModelNurbs

<xs:group name="GeometryContentModelNurbs">
  <xs:annotation>
    <xs:appinfo>Child-node content model corresponding to X3DGeometryNode for Nurbs component.</xs:appinfo>
    <xs:documentation source="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/nurbs.html"/>
  </xs:annotation>
  <xs:choice>
    <xs:element ref="NurbsCurve"/>
    <xs:element ref="NurbsPatchSurface"/>
    <xs:element ref="NurbsSweptSurface"/>
    <xs:element ref="NurbsSwungSurface"/>
    <xs:element ref="NurbsTrimmedSurface"/>
    <!--verify that content model correctly contains other Nurbs nodes-->
  </xs:choice>
</xs:group>