How to use the postprocessing.RealisticBokehEffect function in postprocessing

options.composer = options.composer || _cache.composer;
    options.renderer = options.renderer || _cache.renderer;
    options.scene = options.scene || _cache.scene;
    options.camera = options.camera || _cache.camera;
    if (!options.composer) {
        options.composer = threeComposerEx();
    }

    var composer = options.composer;
    var render_pass = new post_pss.RenderPass(options.scene, options.camera);
    render_pass.renderToScreen = false;
    composer.addPass(render_pass);

    if (options.bokeh) {

        const bokehEffect = new post_pss.RealisticBokehEffect({
            focus: 90.0,
            focalLength: 190,
            luminanceThreshold: 0.325,
            luminanceGain: 2.0,
            bias: -0.35,
            fringe: 0.7,
            maxBlur: 50,
            rings: 5,
            samples: 5,
            showFocus: false,
            manualDoF: false,
            pentagon: true
        });

        const bloomEffect = new post_pss.BloomEffect({
            blendFunction: post_pss.BlendFunction.ADD,