Represents the command for grouping a column outline (range group) on a sheet.
* The command has a boolean field canUndo that indicates whether the command supports undo and redo operations, and an execute method that performs an execute operation or undo operation.
* The arguments of the execute method are as follows.
context {GC.Spread.Sheets.Workbook} The context of the operation.
options {Object} The options of the operation.
* options.sheetName {string} The sheet name.
* options.index {number} The outline starting index.
* options.count {number} The number of rows or columns to group or ungroup in the outline.
isUndo {boolean} true if this is an undo operation; otherwise, false.

var value; // Type: outlineColumn
value = GC.Spread.Sheets.Commands.outlineColumn;

var outlineColumn : outlineColumn;

spread.options.allowUndo = true;
spread.commandManager().execute({cmd: "outlineColumn", sheetName: "Sheet1", index: 3, count: 5});