How to use the gunicorn.http.errors.ForbiddenProxyRequest function in gunicorn

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)

def proxy_protocol_access_check(self):
        # check in allow list
        if isinstance(self.unreader, SocketUnreader):
            try:
                remote_host = self.unreader.sock.getpeername()[0]
            except socket.error as e:
                if e.args[0] == ENOTCONN:
                    raise ForbiddenProxyRequest("UNKNOW")
                raise
            if ("*" not in self.cfg.proxy_allow_ips and
                    remote_host not in self.cfg.proxy_allow_ips):
                raise ForbiddenProxyRequest(remote_host)