class_docstr: Unit tests for dependency module.
  
  ..todo::
     - Add check for ``CLTKException`` if explicit model dl refused
code: def test_dependency_tree(self):
      cltk_nlp = NLP(language="lat")
      doc = cltk_nlp.analyze(text=get_example_text("lat"))
      one_word = doc.words[0]
      one_word.embedding = list()
      f = Form.to_form(word=one_word)
      form_str = f.full_str()
      target = "Gallia_0 [lemma=Gallis,pos=noun,upos=NOUN,xpos=A1|grn1|casA|gen2,Case=nominative,Gender=feminine,InflClass=ind_eur_a,Number=singular]"
      self.assertEqual(form_str, target)
  
      t = DependencyTree.to_tree(doc.sentences[0])
      self.assertEqual(len(t.get_dependencies()), 28)
  
      t = DependencyTree.to_tree(doc.words[:25])
      self.assertIsInstance(t.findall("."), list)
      self.assertIsInstance(t.findall(".")[0], Form)
  
imports: import unittest
  from cltk import NLP
  from cltk.dependency.tree import Dependency, DependencyTree, Form
  from cltk.languages.example_texts import get_example_text
label_desc: Use image node_id 1 for calling the TestDependency obj's underlying member method code with example usage: obj.test_dependency_tree() without return types