code: def setup(self, N):
      data = np.arange(N, dtype=float)
      data[40] = np.nan
      self.array = pd.array(data, dtype="Int64")
  
imports: from importlib import import_module
  import numpy
  import pandas
  from .pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the SortIntegerArray obj's underlying member method code with example usage: obj.setup(N) without return types