code: function toArray(arrayLike) {
          if (arrayLike === undefined || arrayLike === null) {
              return [];
          }
          if (Array.isArray(arrayLike)) {
              return arrayLike;
          }
          return [arrayLike];
      }
docs: When we feed options from the CLI it can be a String or an Array with Strings. Make it easy to treat everything the same.