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// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
pub(crate) fn de_composition<'a, I>(
    tokens: &mut ::std::iter::Peekable<I>,
) -> Result<Option<crate::types::Composition>, ::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::CompositionBuilder::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() {
                        "arn" => {
                            builder = builder.set_arn(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "stageArn" => {
                            builder = builder.set_stage_arn(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| u.into_owned()))
                                    .transpose()?,
                            );
                        }
                        "state" => {
                            builder = builder.set_state(
                                ::aws_smithy_json::deserialize::token::expect_string_or_null(tokens.next())?
                                    .map(|s| s.to_unescaped().map(|u| crate::types::CompositionState::from(u.as_ref())))
                                    .transpose()?,
                            );
                        }
                        "layout" => {
                            builder = builder.set_layout(crate::protocol_serde::shape_layout_configuration::de_layout_configuration(tokens)?);
                        }
                        "destinations" => {
                            builder = builder.set_destinations(crate::protocol_serde::shape_destination_list::de_destination_list(tokens)?);
                        }
                        "tags" => {
                            builder = builder.set_tags(crate::protocol_serde::shape_tags::de_tags(tokens)?);
                        }
                        "startTime" => {
                            builder = builder.set_start_time(::aws_smithy_json::deserialize::token::expect_timestamp_or_null(
                                tokens.next(),
                                ::aws_smithy_types::date_time::Format::DateTimeWithOffset,
                            )?);
                        }
                        "endTime" => {
                            builder = builder.set_end_time(::aws_smithy_json::deserialize::token::expect_timestamp_or_null(
                                tokens.next(),
                                ::aws_smithy_types::date_time::Format::DateTimeWithOffset,
                            )?);
                        }
                        _ => ::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(crate::serde_util::composition_correct_errors(builder).build().map_err(|err| {
                ::aws_smithy_json::deserialize::error::DeserializeError::custom_source("Response was invalid", err)
            })?))
        }
        _ => Err(::aws_smithy_json::deserialize::error::DeserializeError::custom(
            "expected start object or null",
        )),
    }
}