code: def validate_tokens(self):
      terminals = {}
      for n in self.tokens:
          if not _is_identifier.match(n):
              self.log.error("Bad token name '%s'", n)
              self.error = True
          if n in terminals:
              self.log.warning("Token '%s' multiply defined", n)
          terminals[n] = 1
  
imports: import re
  import sys
  import types
  import copy
  import os
  import inspect
label_desc: Use image node_id 5 for calling the LexerReflect obj's underlying member method code with example usage: obj.validate_tokens() without return types