async fn list_firewall_rules(
        &self,
        input: ListFirewallRulesRequest,
    ) -> Result<ListFirewallRulesResponse, RusotoError<ListFirewallRulesError>> {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header("x-amz-target", "Route53Resolver.ListFirewallRules");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, ListFirewallRulesError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response).deserialize::<ListFirewallRulesResponse, _>()
    }
<p>Retrieves the firewall rules that you have defined for the specified firewall rule group. DNS Firewall uses the rules in a rule group to filter DNS network traffic for a VPC. </p> <p>A single call might return only a partial list of the rules. For information, see <code>MaxResults</code>. </p>
rusoto/services/route53resolver/src/generated.rs