(CommandList
  children: [
    (C {(set)} {(-e)})
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:SOURCE_DIR)
          op: Equal
          rhs: 
            {
              (DQ 
                (CommandSubPart
                  command_list: 
                    (CommandList
                      children: [
                        (AndOr
                          ops: [Op_DAmp]
                          children: [
                            (C {(cd)} 
                              {
                                (DQ 
                                  (CommandSubPart
                                    command_list: 
                                      (CommandList
                                        children: [
                                          (C {(dirname)} 
                                            {
                                              (DQ 
                                                (BracedVarSub
                                                  token: <VSub_Name BASH_SOURCE>
                                                  bracket_op: 
                                                    (ArrayIndex
                                                      expr: (ArithWord w:{(Lit_Digits 0)})
                                                    )
                                                  spids: [74 79]
                                                )
                                              )
                                            }
                                          )
                                        ]
                                      )
                                    left_token: <Left_CommandSub '$('>
                                    spids: [69 82]
                                  )
                                )
                              }
                            )
                            (C {(pwd)})
                          ]
                        )
                      ]
                    )
                  left_token: <Left_CommandSub '$('>
                  spids: [64 89]
                )
              )
            }
          spids: [62]
        )
      ]
      spids: [62]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (C {(Lit_Other '[')} {(DQ ($ VSub_Pound '$#'))} {(-eq)} {(2)} {(Lit_Other ']')})
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:version)
                  op: Equal
                  rhs: {($ VSub_Number '$1')}
                  spids: [111]
                )
              ]
              spids: [111]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:nextVersion)
                  op: Equal
                  rhs: {($ VSub_Number '$2')}
                  spids: [115]
                )
              ]
              spids: [115]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:nextVersionSNAPSHOT)
                  op: Equal
                  rhs: {(${ VSub_Name nextVersion) (-SNAPSHOT)}
                  spids: [119]
                )
              ]
              spids: [119]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:tag)
                  op: Equal
                  rhs: {(apache-arrow-) (${ VSub_Name version)}
                  spids: [126]
                )
              ]
              spids: [126]
            )
            (C {(echo)} {(DQ ('Updating changelog for ') ($ VSub_Name '$version'))})
            (C {($ VSub_Name '$SOURCE_DIR') (/update-changelog.sh)} {($ VSub_Name '$version')})
            (C {(echo)} 
              {
                (DQ ('prepare release ') (${ VSub_Name version) (' rc ') (${ VSub_Name rcnum) 
                  (' on tag ') (${ VSub_Name tag) (' then reset to version ') (${ VSub_Name nextVersionSNAPSHOT)
                )
              }
            )
            (C {(cd)} {(DQ (${ VSub_Name SOURCE_DIR) (/../../java))})
            (C {(mvn)} {(release) (Lit_Other ':') (clean)})
            (C {(mvn)} {(release) (Lit_Other ':') (prepare)} 
              {(-Dtag) (Lit_Other '=') (${ VSub_Name tag)} {(-DreleaseVersion) (Lit_Other '=') (${ VSub_Name version)} {(-DautoVersionSubmodules)} 
              {(-DdevelopmentVersion) (Lit_Other '=') (${ VSub_Name nextVersionSNAPSHOT)}
            )
            (C {(cd)} {(-)})
            (C {(echo)} 
              {(DQ ('Finish staging binary artifacts by running: sh dev/release/01-perform.sh'))}
            )
          ]
          spids: [16777215 108]
        )
      ]
      else_action: [
        (C {(echo)} {(DQ ('Usage: ') ($ VSub_Number '$0') (' <version> <nextVersion>'))})
        (ControlFlow token:<ControlFlow_Exit exit>)
      ]
      spids: [235 249]
    )
  ]
)