 
 class ASquareBracketAllowForwarding extends SquareBracket
   @extend()
+  allowForwarding: true
 
 class InnerSquareBracketAllowForwarding extends SquareBracket
   @extend()
+  allowForwarding: true
 
 # -------------------------
 class Parenthesis extends Pair


class ACurlyBracketAllowForwarding extends CurlyBracket
  @extend()

class InnerCurlyBracketAllowForwarding extends CurlyBracket
  @extend()

# -------------------------
class SquareBracket extends Pair


class AParenthesisAllowForwarding extends Parenthesis
  @extend()
  allowForwarding: true

class InnerParenthesisAllowForwarding extends Parenthesis
  @extend()
  allowForwarding: true

# -------------------------
class AngleBracket extends Pair
