waitUntilInternetGatewayExists
suspend fun Ec2Client.waitUntilInternetGatewayExists(request: DescribeInternetGatewaysRequest = DescribeInternetGatewaysRequest { }): Outcome<DescribeInternetGatewaysResponse>
suspend fun Ec2Client.waitUntilInternetGatewayExists(block: DescribeInternetGatewaysRequest.Builder.() -> Unit): Outcome<DescribeInternetGatewaysResponse>