code: def test_dense_PN(self):
      self.decision_function_order_4(input_type="dense", use_diag=True)
  
file_path: tffm/test.py
imports: import unittest
  import numpy
  from tffm import TFFMClassifier
  from scipy import sparse
  import tensorflow
  import pickle
label_desc: Use image node_id 4 for calling the TestFM obj's underlying member method code with example usage: obj.test_dense_PN() without return types