AsyncIterable,
    AsyncIterator,
    Callable,
    Generator,
    Iterable,
    Iterator,
    Mapping,
    Sequence,
)
from contextlib import AsyncExitStack, contextmanager
from copy import copy, deepcopy
from dataclasses import dataclass
from typing import (
    Annotated,
    Any,
    ForwardRef,
    Literal,
    Union,
    cast,
    get_args,
    get_origin,
)

from fastapi import params

                    ).setdefault("content", {})["application/jsonl"] = jsonl_content
                elif route.is_sse_stream:
                    sse_content: dict[str, Any] = {}
                    item_schema = copy.deepcopy(_SSE_EVENT_SCHEMA)
                    if route.stream_item_field:
                        content_schema = get_schema_from_model_field(
                            field=route.stream_item_field,