TASTy Reflect docs is getting outdated

[anatoliykmetyuk]

Link to the knowledge: http://dotty.epfl.ch/docs/reference/metaprogramming/tasty-reflect.html
More information:

E.g.:

def natConstImpl(x: Expr[Int]) given (qctx: QuoteContext): Expr[Int] = {
  import qctx.tasty._
  val xTree: Term = x.unseal
  xTree match {
    case Term.Literal(Constant.Int(n)) =>
      if (n <= 0)
        QuoteError("Parameter must be natural number")
      n.toExpr
    case _ =>
      QuoteError("Parameter must be a known constant")
  }
}

Last time I ran this example, xTree was an Inline containing Term.Literal and not the raw Term.Literal. You get the raw Term.Literal if you do underlyingArgument on the tree.

Also, the foldOver method is mentioned in the article on a number of occasions, which does not seem to be present in the API anymore.