(command.CommandList
  children: [
    (C {(.)} 
      {
        (DQ 
          (command_sub
            left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:86)
            command_list: 
              (command.CommandList
                children: [(C {(dirname)} {(DQ ($ Id.VSub_Number '$0'))})]
              )
          ) (/bazel-common.sh)
        )
      }
    )
    (C {(bazel)} {(test)} 
      {
        (DQ 
          (braced_var_sub
            token: (Token id:Id.VSub_Name val:BAZEL_ARGS span_id:102)
            bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
          )
        )
      } {(//kythe/docs/schema)} {(//...)}
    )
  ]
)