return new String(buf);
    }

    private static String getSignature(final Class<?>... paramTypes) {
        if (paramTypes == null || paramTypes.length == 0) {
            return "";
        }
        final StringBuilder buf = new StringBuilder(100);
        for (final Class<?> type : paramTypes) {
            if (type != null) {
                buf.append(type.getName());
            } else {

        }
        if (paramTypes.length != args.length) {
            return false;
        }
        for (int i = 0; i < args.length; ++i) {
            if (args[i] == null) {
                continue;
            }
            if (ClassUtil.isAssignableFrom(paramTypes[i], args[i].getClass())) {
                continue;
            }

     */
    <T> T newInstance(Object... args);

    /**
     * 引数の型に応じた{@link ConstructorDesc}を返します。
     *
     * @param paramTypes
     *            コンストラクタに渡す引数型の並び
     * @return 引数の型に応じた{@link ConstructorDesc}
     */
    ConstructorDesc getConstructorDesc(Class<?>... paramTypes);

    /**
     * 引数に適合する{@link ConstructorDesc}を返します。
     *
     * @param args
     *            コンストラクタに渡す引数の並び

from ._compat import PYDANTIC_V2, PYDANTIC_VERSION, Undefined

_Unset: Any = Undefined


class ParamTypes(Enum):
    query = "query"
    header = "header"
    path = "path"
    cookie = "cookie"


class Param(FieldInfo):
    in_: ParamTypes

    def __init__(
        self,
        default: Any = Undefined,
        *,

    if field_info_in == params.ParamTypes.path:
        dependant.path_params.append(field)
    elif field_info_in == params.ParamTypes.query:
        dependant.query_params.append(field)
    elif field_info_in == params.ParamTypes.header:
        dependant.header_params.append(field)
    else:
        assert (
            field_info_in == params.ParamTypes.cookie