class_docstr: For the word (ie, node) of a dependency tree and its attributes. Inherits
  from the ``Element`` class of Python's ``xml.etree`` library.
  
  >>> desc_form = Form('described')
  >>> desc_form
  described_0
  >>> desc_form.set('Tense', 'Past')
  >>> desc_form
  described_0
  >>> desc_form / 'VBN'
  described_0/VBN
  >>> desc_form.full_str()
  'described_0 [Tense=Past,pos=VBN]'
docstr: Constructor for the Form class.
docstr_tok: ["Constructor","for","the","Form","class","."]
code: def __init__(self, form: str, form_id: int = 0) -> None:
      """Constructor for the Form class."""
      Element.__init__(self, form, attrib={"form_id": str(form_id)})
  
imports: from typing import Dict, List, Union
  from xml.etree.ElementTree import Element, ElementTree
  from cltk.core.data_types import Doc, Process, Word
  from cltk.core.exceptions import CLTKException
  from cltk.morphology.universal_dependencies_features import NOMINAL_FEATURES, OTHER_FEATURES, VERBAL_FEATURES, MorphosyntacticFeature
label_desc: Use image node_id 1 to create a new Form object from inherited base classes: Element with example: obj = Form(form, form_id)