code: public int getIntProp(Prop.Names prop) throws CommandExecutionException {
          String value = getSingleProp(prop);
          if (value.equals("")) throw new CommandExecutionException(CommandExecutionException.Error.INVALID_RESPONSE);
          try {
              return Integer.valueOf(value);
          } catch (Exception e){
              throw new CommandExecutionException(CommandExecutionException.Error.INVALID_RESPONSE);
          }
      }
docs: Get a single property value and try to convert it to an int.
  @param prop The property to get.
  @return The value of the specified property name.
  @throws CommandExecutionException When there has been a error during the communication or the response was invalid.