How to use the geventhttpclient.connectionpool.SSLConnectionPool function in geventhttpclient

self.use_proxy = True
            connection_host = proxy_host
            connection_port = proxy_port
        else:
            self.use_proxy = False
        if ssl and ssl_options is None:
            ssl_options = {}
        if ssl_options is not None:
            self.ssl = True
            if not self.port:
                self.port = 443
            if not connection_port:
                connection_port = self.port
            # Import SSL as late as possible, fail hard with Import Error
            from geventhttpclient.connectionpool import SSLConnectionPool
            self._connection_pool = SSLConnectionPool(
                connection_host, connection_port, size=concurrency,
                ssl_options=ssl_options,
                ssl_context_factory=ssl_context_factory,
                insecure=insecure,
                network_timeout=network_timeout,
                connection_timeout=connection_timeout,
                disable_ipv6=disable_ipv6)
        else:
            self.ssl = False
            if not self.port:
                self.port = 80
            if not connection_port:
                connection_port = self.port
            self._connection_pool = ConnectionPool(
                connection_host, connection_port,
                size=concurrency,