code: public String getContent() {
          if (content != null) {
              return content;
          }
  
          if (stream != null) {
              Scanner scanner = new Scanner(stream, "UTF-8").useDelimiter("\\A");
  
              if (!scanner.hasNext()) {
                  return "";
              }
  
              String data = scanner.next();
              scanner.close();
  
              return data;
          }
  
          return "";
      }
docs: Get the the content of the response.
  
  <p>
  If there is a content string, that will be returned.
  Otherwise, will get content from input stream
  </p>
  
  @return the content string