class_docstr: prefix tree
code: def isWord(self, text):
      node = self.getNode(text)
      if node:
          return node.isWord
      return False
  
file_path: calamari/calamari_ocr/thirdparty/ctcwordbeamsearch/PrefixTree.py
imports: from __future__ import division
  from __future__ import print_function
label_desc: Use image node_id 5 for calling the PrefixTree obj's underlying member method code with example usage: obj.isWord(text) and returns: False, node