* example(dart/toh-4,5): getHeroesSlowly() to return getHeroes()
Have `getHeroesSlowly()` delay and then return the value of
`getHeroes()`. This makes it easier for user’s performing the tutorial
to keep this slower method as they evolve toh-5 into toh-6.
* example(ts/toh-4,5): getHeroesSlowly() to return getHeroes()
Have `getHeroesSlowly()` delay and then return the value of
`getHeroes()`. This makes it easier for user’s performing the tutorial
to keep this slower method as they evolve toh-5 into toh-6.
