async fn describe_direct_connect_gateway_association_proposals(
        &self,
        input: DescribeDirectConnectGatewayAssociationProposalsRequest,
    ) -> Result<
        DescribeDirectConnectGatewayAssociationProposalsResult,
        RusotoError<DescribeDirectConnectGatewayAssociationProposalsError>,
    > {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header(
            "x-amz-target",
            "OvertureService.DescribeDirectConnectGatewayAssociationProposals",
        );
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(
                request,
                DescribeDirectConnectGatewayAssociationProposalsError::from_response,
            )
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response)
            .deserialize::<DescribeDirectConnectGatewayAssociationProposalsResult, _>()
    }
<p>Describes one or more association proposals for connection between a virtual private gateway or transit gateway and a Direct Connect gateway. </p>
rusoto/services/directconnect/src/generated.rs