code: def test_composition_generation(self):
      results = self.module.composition_generation("诚以养德，信以修身")
      self.assertIsInstance(results, str)
  
file_path: PaddleHub/modules/text/text_generation/ernie_zeus/test.py
imports: import unittest
  import paddlehub
label_desc: Use image node_id 9 for calling the TestHubModule obj's underlying member method code with example usage: obj.test_composition_generation() without return types