How to use the pixiedust.display.display function in pixiedust

# forever
        while not self._stop_event.is_set():
            # read line from Node's stdout
            line = self.ps.stdout.readline()

            # see if it parses as JSON
            obj = None
            try:
                if line:
                    obj = json.loads(line)
                    # if it does and is a pixiedust object
                    if obj and isinstance(obj, dict) and obj['_pixiedust']:
                        if obj['type'] == 'display':
                            pdf = pandas.DataFrame(obj['data'])
                            ShellAccess.pdf = pdf
                            display(pdf)
                        elif obj['type'] == 'print':
                            print(json.dumps(obj['data']))
                        elif obj['type'] == 'store':
                            print('!!! Warning: store is now deprecated - Node.js global variables are automatically propagated to Python !!!')
                            variable = 'pdf'
                            if 'variable' in obj:
                                variable = obj['variable']
                            ShellAccess[variable] = pandas.DataFrame(obj['data'])
                        elif obj['type'] == 'html':
                            IPython.display.display(IPython.display.HTML(obj['data']))
                        elif obj['type'] == 'image':
                            IPython.display.display(IPython.display.HTML('<img src="{0}">'.format(obj['data'])))
                        elif obj['type'] == 'variable':
                            ShellAccess[obj['key']] = obj['value']
                            if self.vw:
                                self.vw.setCache(obj['key'], obj['value'])