code: def setup(self, size, freq, tz):
      if size == 10**6 and tz is tzlocal_obj:
          # tzlocal is cumbersomely slow, so skip to keep runtime in check
          raise NotImplementedError
  
      # we pick 2**55 because smaller values end up returning
      # -1 from npy_datetimestruct_to_datetime with NPY_FR_Y frequency
      # this artificially slows down functions since -1 is also the
      # error sentinel
      arr = np.arange(2**55, 2**55 + 10, dtype="i8").repeat(
          size // 10
      )
      self.i8values = arr
  
imports: import numpy
  from pandas._libs.tslibs.period import Period, periodarr_to_dt64arr
  from pandas.tseries.frequencies import to_offset
  from .tslib import _sizes, _tzs, tzlocal_obj
label_desc: Use image node_id 1 for calling the TimeDT64ArrToPeriodArr obj's underlying member method code with example usage: obj.setup(size, freq, tz) without return types