Mapping,
    Optional,
    Sequence,
    Set,
    Tuple,
    Type,
    Union,
)

from fastapi import params
from fastapi._compat import (
    ModelField,
    Undefined,
    _get_model_config,
    _model_dump,
    _normalize_errors,
    lenient_issubclass,
)
from fastapi.datastructures import Default, DefaultPlaceholder
from fastapi.dependencies.models import Dependant