code: def test_predict_length():
      model = pf.EGARCH(data=data, p=2, q=2)
      x = model.fit()
      x.summary()
      assert model.predict(h=5).shape[0] == 5
  
imports: import numpy
  import pyflux
  import pandas
  from pandas.io.data import DataReader
  from datetime import datetime
label_desc: Use image node_id 10 for calling a global function with example usage: test_predict_length() without return types