<xs:complexType name="IndoorStoreyAttributeType">
    <xs:complexContent>
      <xs:extension base="uro:IndoorAttributeType">
        <xs:sequence>
          <xs:element name="category" minOccurs="0" type="xs:boolean"/>
          <xs:element name="ordinal" minOccurs="0" type="xs:double"/>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>