code: def setup(self, method):
      df = pd.DataFrame({"A": range(50), "B": range(50)})
      self.gb_ewm = df.groupby("A").ewm(com=1.0)
  
imports: import warnings
  import numpy
  import pandas
  from .pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the GroupbyEWM obj's underlying member method code with example usage: obj.setup(method) without return types