mapping

map syntax ShowSyntax.Top -> Top {
  | WithoutNode -> TopWithoutNode {
    Usings -> Usings;
    Templates -> Templates;
  }
  | WithNode -> TopWithNode {
    Usings -> Usings;
    Node -> TopNode;
    Templates -> Templates;

    match(NamespaceOpt) { | Some(cl) -> Some(cl.NamespaceKey) | None() -> None() } -> NamespaceKey;

    Name = Name(Location, if (Node.NodeNameOpt.HasValue) Node.NodeNameOpt.Value.Key.IdentifierBodyData else "");
    Members = TypeMember.AstList(Location);
    Attributes = CustomAttributeReference.AstList(Location);
    IsPartial = ParsedValue(Node.Key.Span, true);
    Node.Key -> TypeBase;
    Modifiers = Modifier.AstList(Location, array[Modifier.Public(Location)]);
    TypeParameterConstraints = TypeParameterConstraintsClause.AstList(Location);
    TypeParameterAliases = TypeParameterAlias.AstList(Location);
  }
}