public void setGatewayId(ActionTarget gatewayId) {
        this.gatewayId = gatewayId;
    }
<p>
Information about the ID of an internet gateway or virtual private gateway.
</p>

@param gatewayId
       Information about the ID of an internet gateway or virtual private gateway.
aws-java-sdk-fms/src/main/java/com/amazonaws/services/fms/model/EC2ReplaceRouteAction.java