Clone JavaScript object with JSON stringify and parse in the callas pdfToolbox

clone.js

function clone(obj) {
  /*
    Use this function in a callas pdfToolbox process plan for cloning objects (e.g. app.doc) 
    to manipulate them after a check was executed.
  */
  if (obj !== undefined) {
    return JSON.parse(JSON.stringify(obj));
  }
  return obj;
}