Additional Metadata

additionalMetadata
        |___element 'metadata'
              |___element 'unitList'
                    |___element 'unit'
                          |  \___attribute 'id' = 'numberInThousand'
                          |  \___attribute 'name' = 'numberInThousand'
                          |  \___attribute 'unitType' = 'dimensionless'
                          |  \___attribute 'parentSI' = 'number'
                          |  \___attribute 'multiplierToSI' = '1000'
                          |___text 'number in thousand'