(CommandList
  children: [
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (C {(Lit_Other '[')} {($ VSub_Pound '$#')} {(-ne)} {(1)} {(Lit_Other ']')})
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (SimpleCommand
              words: [
                {(echo)}
                {
                  (DQ ('Usage: ') 
                    (CommandSubPart
                      command_list: (CommandList children:[(C {(basename)} {($ VSub_Number '$0')})])
                      left_token: <Left_Backtick '`'>
                      spids: [32 36]
                    ) (' path')
                  )
                }
              ]
              redirects: [(Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})]
            )
            (ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
          ]
          spids: [16777215 25]
        )
      ]
      spids: [16777215 48]
    )
    (Pipeline
      children: [
        (C {(stat)} {($ VSub_Number '$1')})
        (C {(sed)} {(-n)} {(SQ <'s/^Access: (\\([0-9]\\{1,\\}\\).*/\\1/p'>)})
      ]
      negated: F
    )
  ]
)