[SOLVED] Webix button icons list required

I am using button icons for my Webix application as follows :

  {view:"button", id:"saveBtn",  type:"icon", icon:"floppy-o", label:"Save", width:100, tooltip: "Save data" }

I know other buttons icons to create buttons for serving various purposes. They are 'upload', 'file-text-o', 'download' etc. However I am not able to get the URL which lists down all the available icons which can be used.

Can anybody please point me to that listing URL (probably font-awesome).
This link https://docs.webix.com/desktop__icon.html does not provide the entire list.

Thanks.