ifc:IfcReflectanceMethodEnum

<xs:simpleType name="IfcReflectanceMethodEnum">
  <xs:restriction base="xs:string">
    <xs:enumeration value="blinn"/>
    <xs:enumeration value="flat"/>
    <xs:enumeration value="glass"/>
    <xs:enumeration value="matt"/>
    <xs:enumeration value="metal"/>
    <xs:enumeration value="mirror"/>
    <xs:enumeration value="phong"/>
    <xs:enumeration value="plastic"/>
    <xs:enumeration value="strauss"/>
    <xs:enumeration value="notdefined"/>
  </xs:restriction>
</xs:simpleType>