How to use nested headers option in Angular 4 with this plugin.

[raghu556]

I am passing below options, i want to create a nested header with colspan like https://jsfiddle.net/api/post/library/pure/

Kindly help.

this.options = {
className: 'calender',
allowInsertColumn: false,
allowInsertRow: false,
maxRows: 2,
editor: false,
rowHeaders: false,
colHeaders: false,
contextMenu: false,
fixedColumnsLeft: 1,
manualColumnFreeze: true,
outsideClickDeselects: true,
customBorders: true,
columns: [],
}