Run the following script in SQL Server.

IF NOT EXISTS (select 'exists' from sys.partition_functions where name = 'TEST_PARTFUNC')
   CREATE PARTITION FUNCTION [TEST_PARTFUNC] (varchar(20)) AS RANGE LEFT FOR VALUES (N'ABCDE',N'ASDSAD',N'FGHIJ',N'HFSER',N'POSAW',N'RUZDAW')
GO
IF NOT EXISTS (select 'exists' from sys.partition_schemes where name = 'TEST_PARTSCHEME_INDEX')
   CREATE PARTITION SCHEME [TEST_PARTSCHEME_INDEX] AS PARTITION [TEST_PARTFUNC] TO ([PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY])
GO
CREATE TABLE dbo.TEST_TABLE
(
    STAGE_SOURCE VARCHAR(20)  NOT NULL,
    ID INT NOT NULL,
    [COL1] VARCHAR(20) NOT NULL,
    [COL2] VARCHAR(20) NOT NULL
) 
GO
CREATE NONCLUSTERED INDEX [TEST_INDEX]
   ON [dbo].[TEST_TABLE]([ID], [STAGE_SOURCE])
   INCLUDE ([COL1], [COL2])
   WITH (
      FILLFACTOR = 100,  
      DATA_COMPRESSION = PAGE
   )
   ON [TEST_PARTSCHEME_INDEX] (STAGE_SOURCE)
GO

In schema browser, select the index TEST_INDEX and choose Script Object -> CREATE. The following script is generated.

CREATE NONCLUSTERED INDEX [TEST_INDEX]
   ON [dbo].[TEST_TABLE]([ID], [STAGE_SOURCE])
   INCLUDE ([COL1], [COL1], [COL1], [COL1], [COL1], [COL1], [COL1], [COL2], [COL2], [COL2], [COL2], [COL2], [COL2], [COL2])
GO