How to use enum in Solidity programming langauge ?

pragma solidity ^0.5.0;

contract test {

   enum FreshJuiceSize{ SMALL, MEDIUM, LARGE }

   FreshJuiceSize choice;

   FreshJuiceSize constant defaultChoice = FreshJuiceSize.MEDIUM;

   function setLarge() public {

      choice = FreshJuiceSize.LARGE;

   }

   function getChoice() public view returns (FreshJuiceSize) {

      return choice;

   }

   function getDefaultChoice() public pure returns (uint) {

      return uint(defaultChoice);

   }

}