<xs:simpleType name="IlluminanceUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="footcandle">
      <xs:annotation>
        <xs:documentation>footcandle</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="klx">
      <xs:annotation>
        <xs:documentation>kilolux</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lm/m2">
      <xs:annotation>
        <xs:documentation>lumen per square metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lx">
      <xs:annotation>
        <xs:documentation>lux</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>