(command.CommandList
  children: [
    (command.AndOr
      ops: [Id.Op_DAmp]
      children: [
        (command.DBracket
          expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName '$require_me')})
        )
        (C {<typeset>} {<-i>} {<require_me>})
      ]
    )
    (command.DParen
      child: (arith_expr.UnaryAssign op_id:Id.Node_PostDPlus child:<Id.Lit_ArithVarLike require_me>)
    )
  ]
)