gtk:status-icon-set-name (icon name)

icon -- a gtk:status-icon object
name -- a string with the name

Sets the name of the tray icon. This should be a string identifying this icon. It may be used for sorting the icons in the tray and will not be shown to the user. The gtk:status-icon-set-name function has been deprecated since version 3.14 and should not be used in newly written code.