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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def GetPathInfo(self, timestamp=None):
 """Generates a summary about the path record. Args: timestamp: A point in time from which the data should be retrieved. Returns: A `rdf_objects.PathInfo` instance. """

    path_info_timestamp = self._LastEntryTimestamp(self._path_infos, timestamp)
    try:
      result = self._path_infos[path_info_timestamp].Copy()
    except KeyError:
      result = rdf_objects.PathInfo(
          path_type=self._path_type, components=self._components)

    stat_entry_timestamp = self._LastEntryTimestamp(self._stat_entries,
                                                    timestamp)
    result.last_stat_entry_timestamp = stat_entry_timestamp
    result.stat_entry = self._stat_entries.get(stat_entry_timestamp)

    hash_entry_timestamp = self._LastEntryTimestamp(self._hash_entries,
                                                    timestamp)
    result.last_hash_entry_timestamp = hash_entry_timestamp
    result.hash_entry = self._hash_entries.get(hash_entry_timestamp)

    return result