How to use the cheroot.makefile.StreamWriter function in cheroot

def _handle_no_ssl(self, req):
        if not req or req.sent_headers:
            return
        # Unwrap wfile
        try:
            resp_sock = self.socket._sock
        except AttributeError:
            # self.socket is of OpenSSL.SSL.Connection type
            resp_sock = self.socket._socket
        self.wfile = StreamWriter(resp_sock, 'wb', self.wbufsize)
        msg = (
            'The client sent a plain HTTP request, but '
            'this server only speaks HTTPS on this port.'
        )
        req.simple_response('400 Bad Request', msg)
        self.linger = True

)

    def send(self, *args, **kwargs):
        """Send some part of message to the socket."""
        return self._safe_call(
            False,
            super(SSLFileobjectMixin, self).send,
            *args, **kwargs
        )


class SSLFileobjectStreamReader(SSLFileobjectMixin, StreamReader):
    """SSL file object attached to a socket object."""


class SSLFileobjectStreamWriter(SSLFileobjectMixin, StreamWriter):
    """SSL file object attached to a socket object."""


class SSLConnectionProxyMeta:
    """Metaclass for generating a bunch of proxy methods."""

    def __new__(mcl, name, bases, nmspc):
        """Attach a list of proxy methods to a new class."""
        proxy_methods = (
            'get_context', 'pending', 'send', 'write', 'recv', 'read',
            'renegotiate', 'bind', 'listen', 'connect', 'accept',
            'setblocking', 'fileno', 'close', 'get_cipher_list',
            'getpeername', 'getsockname', 'getsockopt', 'setsockopt',
            'makefile', 'get_app_data', 'set_app_data', 'state_string',
            'sock_shutdown', 'get_peer_certificate', 'want_read',
            'want_write', 'set_connect_state', 'set_accept_state',

def makefile(self, sock, mode='r', bufsize=DEFAULT_BUFFER_SIZE):
        """Return socket file object."""
        cls = StreamReader if 'r' in mode else StreamWriter
        return cls(sock, mode, bufsize)

def makefile(self, sock, mode='r', bufsize=DEFAULT_BUFFER_SIZE):
        """Return socket file object."""
        cls = StreamReader if 'r' in mode else StreamWriter
        return cls(sock, mode, bufsize)

)

    def send(self, *args, **kwargs):
        """Send some part of message to the socket."""
        return self._safe_call(
            False,
            super(SSLFileobjectMixin, self).send,
            *args, **kwargs
        )


class SSLFileobjectStreamReader(SSLFileobjectMixin, StreamReader):
    """SSL file object attached to a socket object."""


class SSLFileobjectStreamWriter(SSLFileobjectMixin, StreamWriter):
    """SSL file object attached to a socket object."""


class SSLConnectionProxyMeta:
    """Metaclass for generating a bunch of proxy methods."""

    def __new__(mcl, name, bases, nmspc):
        """Attach a list of proxy methods to a new class."""
        proxy_methods = (
            'get_context', 'pending', 'send', 'write', 'recv', 'read',
            'renegotiate', 'bind', 'listen', 'connect', 'accept',
            'setblocking', 'fileno', 'close', 'get_cipher_list',
            'getpeername', 'getsockname', 'getsockopt', 'setsockopt',
            'makefile', 'get_app_data', 'set_app_data', 'state_string',
            'sock_shutdown', 'get_peer_certificate', 'want_read',
            'want_write', 'set_connect_state', 'set_accept_state',