TYPE_CHECKING,
    Any,
    Dict,
    MutableMapping,
    Optional,
    Set,
    Type,
    Union,
    cast,
)
from weakref import WeakKeyDictionary

import fastapi
from fastapi._compat import (
    PYDANTIC_V2,
    BaseConfig,
    ModelField,
    PydanticSchemaGenerationError,
    Undefined,
    UndefinedType,
    Validator,
    lenient_issubclass,
)

    if summary:
        info["summary"] = summary
    if description:
        info["description"] = description
    if terms_of_service:
        info["termsOfService"] = terms_of_service
    if contact:
        info["contact"] = contact
    if license_info:
        info["license"] = license_info
    output: Dict[str, Any] = {"openapi": openapi_version, "info": info}
    if servers:
        output["servers"] = servers