code: def setup(self):
      N = 10**5
      B = N + 20000
      self.datetime_left = DatetimeIndex(range(N))
      self.datetime_right = DatetimeIndex(range(N, B))
  
imports: import gc
  import numpy
  from pandas import DatetimeIndex, Index, IntervalIndex, MultiIndex, RangeIndex, Series, date_range
  from .pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the SetDisjoint obj's underlying member method code with example usage: obj.setup() without return types