valueReference property
        
        dynamic
        valueReference
        
      
getter/setter pair
      A secondary value that provides additional information on the
original value, e.g a reference temperature or a type of
measurement.  Supported types: DefinedTerm, Enumeration,
MeasurementTypeEnumeration, PropertyValue,
QualitativeValue, QuantitativeValue, String,
StructuredValue
Implementation
dynamic valueReference;