allowed_external_types = [
    "aws_smithy_types::*",
    "chrono::datetime::DateTime",
    "chrono::offset::fixed::FixedOffset",
    "chrono::offset::utc::Utc",
    "time::offset_date_time::OffsetDateTime",
    "aws_smithy_async::future::pagination_stream::PaginationStream",
    "futures_core::stream::Stream",
]