serialization_fields = [field for field in fields if field.mode == "serialization"]
    flat_validation_models = get_flat_models_from_fields(
        validation_fields, known_models=set()
    )
    flat_serialization_models = get_flat_models_from_fields(
        serialization_fields, known_models=set()
    )
    flat_validation_model_fields = [
        ModelField(

from .v2 import get_cached_model_fields as get_cached_model_fields
from .v2 import get_definitions as get_definitions
from .v2 import get_flat_models_from_fields as get_flat_models_from_fields
from .v2 import get_missing_field_error as get_missing_field_error
from .v2 import get_model_name_map as get_model_name_map
from .v2 import get_schema_from_model_field as get_schema_from_model_field

import inspect
import warnings
from collections.abc import Sequence
from typing import Any, Literal, cast

from fastapi import routing
from fastapi._compat import (
    ModelField,
    get_definitions,
    get_flat_models_from_fields,
    get_model_name_map,
    get_schema_from_model_field,
    lenient_issubclass,
)
from fastapi.datastructures import DefaultPlaceholder, _Unset
from fastapi.dependencies.models import Dependant