<xs:complexType name="IfcAxis2Placement3DType">
    <xs:sequence>
      <xs:element name="location" minOccurs="0" type="gml:PointPropertyType"/>
      <xs:element name="axis" minOccurs="0" type="gml:doubleList"/>
      <xs:element name="refDirection" minOccurs="0" type="gml:doubleList"/>
    </xs:sequence>
  </xs:complexType>