code: def get_json(url, post_values=None, headers=None):
      
  
      json_headers = {} if headers is None else headers.copy()
  
      if post_values is None:
          request_type = RequestType.GET
      else:
          request_type = RequestType.POST
          json_headers = {**json_headers, **{'Content-Type': MimeType.get_string(MimeType.JSON)}}
  
      request = DownloadRequest(url=url, headers=json_headers, request_type=request_type, post_values=post_values,
                                save_response=False, return_data=True, data_type=MimeType.JSON)
  
      return execute_download_request(request)
docs: Download request as JSON data type
  
      :param url: url to Sentinel Hub's services or other sources from where the data is downloaded
      :type url: str
      :param post_values: form encoded data to send in POST request. Default is ``None``
      :type post_values: dict
      :param headers: add HTTP headers to request. Default is ``None``
      :type headers: dict
      :return: request response as JSON instance
      :rtype: JSON instance or None
      :raises: RunTimeError