code: private void setGravatarPicture() {
  		if (StringUtils.isBlank(picture)) {
  			if (email != null) {
  				String emailHash = Utils.md5(email.toLowerCase());
  				setPicture("https://www.gravatar.com/avatar/" + emailHash + "?size=400&d=mm&r=pg");
  			} else {
  				setPicture("https://www.gravatar.com/avatar?d=mm&size=400");
  			}
  		}
  	}
docs: Sets the profile picture using the Gravatar service.