class_docstr: Static file server with /healthz support.
docstr: Sends out 500 response with missing files.
docstr_tok: ["Sends","out","500","response","with","missing","files","."]
code: def report_missing_files(self, files):
      """Sends out 500 response with missing files."""
      accumulate = ""
      for file_path in files:
          if not os.path.exists(file_path):
              accumulate = "%s '%s'" % (accumulate, file_path)
  
      if accumulate:
          self.report_error("Could not find:%s" % accumulate)
          return True
  
      return False
  
imports: from __future__ import print_function
  import json
  import os
  import re
  import socket
  import subprocess
  import sys
  from absl import app
  from absl import flags
  import http.client
  import http.server
  from six.moves.urllib import parse
label_desc: Use image node_id 3 for calling the Youtube8MRequestHandler obj's underlying member method code with example usage: obj.report_missing_files(files) and returns: False, True