pub fn ser_describe_engine_versions_input_input(
object: &mut ::aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::operation::describe_engine_versions::DescribeEngineVersionsInput,
) -> Result<(), ::aws_smithy_types::error::operation::SerializationError> {
if let Some(var_1) = &input.engine {
object.key("Engine").string(var_1.as_str());
}
if let Some(var_2) = &input.engine_version {
object.key("EngineVersion").string(var_2.as_str());
}
if let Some(var_3) = &input.parameter_group_family {
object.key("ParameterGroupFamily").string(var_3.as_str());
}
if let Some(var_4) = &input.max_results {
object.key("MaxResults").number(
#[allow(clippy::useless_conversion)]
::aws_smithy_types::Number::NegInt((*var_4).into()),
);
}
if let Some(var_5) = &input.next_token {
object.key("NextToken").string(var_5.as_str());
}
if let Some(var_6) = &input.default_only {
object.key("DefaultOnly").boolean(*var_6);
}
Ok(())
}