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// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
pub(crate) fn de_mqtt_headers<'a, I>(
    tokens: &mut ::std::iter::Peekable<I>,
) -> Result<Option<crate::types::MqttHeaders>, ::aws_smithy_json::deserialize::error::DeserializeError>
where
    I: Iterator<Item = Result<::aws_smithy_json::deserialize::Token<'a>, ::aws_smithy_json::deserialize::error::DeserializeError>>,
{
    match tokens.next().transpose()? {
        Some(::aws_smithy_json::deserialize::Token::ValueNull { .. }) => Ok(None),
        Some(::aws_smithy_json::deserialize::Token::StartObject { .. }) => {
            #[allow(unused_mut)]
            let mut builder = crate::types::builders::MqttHeadersBuilder::default();
            loop {
                match tokens.next().transpose()? {
                    Some(::aws_smithy_json::deserialize::Token::EndObject { .. }) => break,
                    Some(::aws_smithy_json::deserialize::Token::ObjectKey { key, .. }) => match key.to_unescaped()?.as_ref() {
                        "payloadFormatIndicator" => {
                            builder = builder.set_payload_format_indicator(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "contentType" => {
                            builder = builder.set_content_type(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "responseTopic" => {
                            builder = builder.set_response_topic(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "correlationData" => {
                            builder = builder.set_correlation_data(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "messageExpiry" => {
                            builder = builder.set_message_expiry(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "userProperties" => {
                            builder = builder.set_user_properties(crate::protocol_serde::shape_user_properties::de_user_properties(tokens)?);
                        }
                        _ => ::aws_smithy_json::deserialize::token::skip_value(tokens)?,
                    },
                    other => {
                        return Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(format!(
                            "expected object key or end object, found: {:?}",
                            other
                        )))
                    }
                }
            }
            Ok(Some(builder.build()))
        }
        _ => Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
            "expected start object or null",
        )),
    }
}

pub fn ser_mqtt_headers(
    object: &mut ::aws_smithy_json::serialize::JsonObjectWriter,
    input: &crate::types::MqttHeaders,
) -> Result<(), ::aws_smithy_types::error::operation::SerializationError> {
    if let Some(var_1) = &input.payload_format_indicator {
        object.key("payloadFormatIndicator").string(var_1.as_str());
    }
    if let Some(var_2) = &input.content_type {
        object.key("contentType").string(var_2.as_str());
    }
    if let Some(var_3) = &input.response_topic {
        object.key("responseTopic").string(var_3.as_str());
    }
    if let Some(var_4) = &input.correlation_data {
        object.key("correlationData").string(var_4.as_str());
    }
    if let Some(var_5) = &input.message_expiry {
        object.key("messageExpiry").string(var_5.as_str());
    }
    if let Some(var_6) = &input.user_properties {
        let mut array_7 = object.key("userProperties").start_array();
        for item_8 in var_6 {
            {
                #[allow(unused_mut)]
                let mut object_9 = array_7.value().start_object();
                crate::protocol_serde::shape_user_property::ser_user_property(&mut object_9, item_8)?;
                object_9.finish();
            }
        }
        array_7.finish();
    }
    Ok(())
}