code: def setup(self, index):
      N = 100000
      indexes = {
          "int": np.arange(N),
          "datetime": date_range("20000101", periods=N, freq="h"),
      }
      df = DataFrame(
          np.random.randn(N, 5),
          columns=[f"float_{i}" for i in range(5)],
          index=indexes[index],
      )
      df.to_json(self.fname, orient="records", lines=True)
  
imports: import sys
  import numpy
  from pandas import DataFrame, Index, concat, date_range, json_normalize, read_json, timedelta_range
  from ..pandas_vb_common import BaseIO
  from ..pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the ReadJSONLines obj's underlying member method code with example usage: obj.setup(index) without return types