Cogl.FrameClosure
const Cogl = imports.gi.Cogl; let frameClosure = new Cogl.FrameClosure();
An opaque type that tracks a Cogl.FrameCallback and associated user data. A Cogl.FrameClosure pointer will be returned from Cogl.Onscreen.prototype.add_frame_callback and it allows you to remove a callback later using Cogl.Onscreen.prototype.remove_frame_callback.
Since 1.14