pub fn ser_upgrade_elasticsearch_domain_input_input(
object: &mut ::aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::operation::upgrade_elasticsearch_domain::UpgradeElasticsearchDomainInput,
) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::SerializationError> {
if let Some(var_1) = &input.domain_name {
object.key("DomainName").string(var_1.as_str());
}
if let Some(var_2) = &input.perform_check_only {
object.key("PerformCheckOnly").boolean(*var_2);
}
if let Some(var_3) = &input.target_version {
object.key("TargetVersion").string(var_3.as_str());
}
Ok(())
}