code: def _maxlengths(self):
      # The first line's length.
      yield self._maxlen - len(self._current_line)
      while True:
          yield self._maxlen - self._continuation_ws_len
  
imports: import re
  import binascii
  import email.quoprimime
  import email.base64mime
  from email.errors import HeaderParseError
  from email import charset
label_desc: Use image node_id 7 for calling the _ValueFormatter obj's underlying member method code with example usage: obj._maxlengths() without return types