====== randomWeatherID ======

  * Parameters and types: None
  * Return value and type:
     * code: numberSuccess (ErrorCode.OK) ErrorCode
    * wtype: numberweather value (WEATHERSTATUS) WEATHERSTATUS
  * The main function of this method: Randomly generate a weather ID
  * The specific use cases are as follows:

<code>
local code, wtype = World:randomWeatherID()
if code == ErrorCode.OK then
print('Execution successful', code, wtype )
else
print('Execution failed')
end </code>