<xs:complexType name="TopologySetType">
  <xs:annotation>
    <xs:documentation>The TopologySetType describes the main container for storing all topological entities presented in the CAD scene.</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element ref="VertexSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional VertexSet element is a collection of all model vertices.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="EdgeSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional EdgeSet element is a collection of all model edges.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="LoopSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional LoopSet element is a collection of all model loops.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="FaceSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional FaceSet element is a collection of all model faces.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="ShellSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional ShellSet element is a collection of all model shells.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="BodySet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional BodySet element is a collection of all model bodies.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element ref="PointCloudSet" minOccurs="0">
      <xs:annotation>
        <xs:documentation>The optional PointCloudSet element is a collection of all model point clouds.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>