GLib.OptionEntry
const GLib = imports.gi.GLib; let optionEntry = new GLib.OptionEntry({ short_name: value flags: value arg: value });
A <structname>GOptionEntry</structname> defines a single option. To have an effect, they must be added to a GLib.OptionGroup with GLib.OptionContext.prototype.add_main_entries or GLib.OptionGroup.prototype.add_entries.