text: import sidekick.api as sk
  
  
  # It should infer the right properties for
  class Foo:
      lst = sk.lazy(lambda _: [])
      set: sk.Prop[set] = sk.lazy(lambda _: set())
  
  
  foo = Foo()
  foo.lst.append(42)
  foo.lst.add(42)
  foo.set.append(42)
  foo.set.add(42)
  