code: def setup(self, constructor, window, dtype, method):
      N = 10**5
      arr = (100 * np.random.random(N)).astype(dtype)
      index = pd.date_range("2017-01-01", periods=N, freq="5s")
      self.window = getattr(pd, constructor)(arr, index=index).rolling(
          window
      )
  
imports: import warnings
  import numpy
  import pandas
  from .pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the VariableWindowMethods obj's underlying member method code with example usage: obj.setup(constructor, window, dtype, method) without return types