class_docstr: Class to help find signs in tree
docstr: Find sign in tree
  :param bit:
  :return: True if sign is found
code: def find(self, bit):
      """
      Find sign in tree
      :param bit:
      :return: True if sign is found
      """
      if bit == "0":
          self.current_node = self.current_node.left
      elif bit == "1":
          self.current_node = self.current_node.right
      else:
          self._reset()
          return True
  
      if self.current_node.sign is not None:
          self._reset(self.current_node.sign)
          return True
      else:
          return False
  
imports: from collections import defaultdict, deque
  import heapq
label_desc: Use image node_id 2 for calling the TreeFinder obj's underlying member method code with example usage: obj.find(bit) and returns: True, False, True