code: public String getAccessKeyAsString() {
  		char accessKey = getAccessKey();
  
  		if (Character.isLetterOrDigit(accessKey)) {
  			return String.valueOf(accessKey);
  		}
  
  		return null;
  	}
docs: Returns the accesskey character as a String. If the character is not a letter or digit then <code>null</code> is
  returned.
  
  @return The accesskey character as a String (may be <code>null</code>).