code: def setup(self):
      rng = np.random.default_rng(5678)
      # Create some long arrays for computation
      x = rng.standard_normal(2**20)
      y = rng.standard_normal(2**20)
      self.x = x
      self.y = y
  
imports: from itertools import product
  import numpy
  from .common import Benchmark, safe_import
label_desc: Use image node_id 1 for calling the CalculateWindowedFFT obj's underlying member method code with example usage: obj.setup() without return types