(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:script_root)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [(C {(dirname)} {(DQ (${ VSub_Name BASH_SOURCE))})]
                  )
                left_token: <Left_Backtick "`">
                spids: [45 53]
              )
            }
          spids: [44]
        )
      ]
      spids: [44]
    )
    (C {(source)} {($ VSub_Name "$script_root") (/env.sh)})
    (C {(./vtgate-down.sh)})
    (SimpleCommand
      words: [{(./vttablet-down.sh)}]
      more_env: [
        (env_pair name:SHARDS val:{($ VSub_Name "$SHARDS")} spids:[63])
        (env_pair name:CELLS val:{($ VSub_Name "$CELLS")} spids:[66])
        (env_pair name:TABLETS_PER_SHARD val:{($ VSub_Name "$TABLETS_PER_SHARD")} spids:[69])
      ]
    )
    (C {(./vtctld-down.sh)})
    (C {(./etcd-down.sh)})
  ]
)