code: def parse_field_path(api_repr):
      
      # code dredged back up from
      # https://github.com/googleapis/google-cloud-python/pull/5109/files
      field_names = []
      for field_name in split_field_path(api_repr):
          # non-simple field name
          if field_name[0] == "`" and field_name[-1] == "`":
              field_name = field_name[1:-1]
              field_name = field_name.replace(_ESCAPED_BACKTICK, _BACKTICK)
              field_name = field_name.replace(_ESCAPED_BACKSLASH, _BACKSLASH)
          field_names.append(field_name)
      return field_names
docs: Parse a **field path** from into a list of nested field names.
  
      See :func:`field_path` for more on **field paths**.
  
      Args:
          api_repr (str):
              The unique Firestore api representation which consists of
              either simple or UTF-8 field names. It cannot exceed
              1500 bytes, and cannot be empty. Simple field names match
              ``'^[_a-zA-Z][_a-zA-Z0-9]*$'``. All other field names are
              escaped by surrounding them with backticks.
  
      Returns:
          List[str, ...]: The list of field names in the field path.