class_docstr: A data structure to represent a parse tree
class_docstr_tok: ["A","data","structure","to","represent","a","parse","tree"]
code: def __init__(self, label=None, children=None):
      if children is None:
          self.children = EMPTY_CHILDREN
      elif isinstance(children, Tree):
          self.children = (children,)
      else:
          self.children = tuple(children)
  
      self.label = label
  
imports: from collections import deque, Counter
  from enum import Enum
  from io import StringIO
  import itertools
  import re
  import warnings
  from stanza.models.common.stanza_object import StanzaObject
label_desc: Use image node_id 1 to create a new Tree object from inherited base classes: StanzaObject with example: obj = Tree(label, children)