#       it to a variable first.
        #
        set add ReferencedAssemblies.Add

        #
        # NOTE: Create the base command to evaluate and add the property
        #       settings that are almost always needed by our unit tests
        #       (i.e. the System and System.Data assembly references).
        #
        set command [list \
            compileCSharp $text $memory $symbols $strict results \
            errors $add System.dll $add System.Data.dll $add \
            System.Transactions.dll $add System.Xml.dll]

        #
        # NOTE: Add all the provided file names as assembly references.
        #
        foreach fileName $fileNames {
          lappend command $add [getBinaryFileName $fileName]
        }

        #       it to a variable first.
        #
        set add ReferencedAssemblies.Add

        #
        # NOTE: Create the base command to evaluate and add the property
        #       settings that are almost always needed by our unit tests
        #       (e.g. System and System.Data assembly references, etc).
        #
        set command [list \
            compileCSharp $text $memory $symbols $strict results errors \
            $add System.dll $add System.Data.dll $add System.Xml.dll \
            $add System.Transactions.dll]

        #
        # NOTE: Add all the provided file names as assembly references.
        #
        foreach fileName $fileNames {
          lappend command $add [getBinaryFileName $fileName]
        }