class_docstr: Prints the contents of every filter that passes through as a debug
  log entry.
class_docstr_tok: ["Prints","the","contents","of","every","filter","that","passes","through","as","a","debug","log","entry","."]
code: def __call__(self, tokens):
      logger = self.logger
      for t in tokens:
          logger.debug(repr(t))
          yield t
  
imports: from itertools import chain
  from whoosh.compat import next
  from whoosh.analysis.acore import Composable
  from whoosh.util.text import rcompile
label_desc: Use image node_id 2 for calling the LoggingFilter obj's underlying member method code with example usage: obj.__call__(tokens) without return types