code: def _normalize_entries(entries, separators=None):
      """
      Normalizes the entry paths to use the POSIX path separator.
  
      *entries* (:class:`~collections.abc.Iterable` of :class:`.TreeEntry`)
      contains the entries to be normalized.
  
      *separators* (:class:`~collections.abc.Collection` of :class:`str`; or
      :data:`None`) optionally contains the path separators to normalize.
      See :func:`normalize_file` for more information.
  
      Returns a :class:`dict` mapping the each normalized file path (:class:`str`)
      to the entry (:class:`.TreeEntry`)
      """
      norm_files = {}
      for entry in entries:
          norm_files[
              normalize_file(entry.path, separators=separators)
          ] = entry
      return norm_files
  
imports: import os
  import os.path
  import posixpath
  import stat
  from .compat import Collection, Iterable, string_types, unicode
label_desc: Use image node_id 9 for calling a global function with example usage: _normalize_entries(entries, separators) and returns: norm_files