In node imagemagick-native how to add callback method for convert method

In below convert method i need to add callback method.How can i do that.

 var imagemagick = require('imagemagick-native');
 var srcData     = require('fs').readFileSync('./test/test.png'); 

 imagemagick.convert({
       srcData: srcData, 
       width: 100,
       height: 100,
       resizeStyle: "aspectfill",
       quality: 80,
      format: 'JPEG'
  });