import { NULL, ASN1Element as _Element } from '@wildboar/asn1';
import * as $ from '@wildboar/asn1/functional';
import { Identifier } from '../DefinitionASN1Module/Identifier.ta.mjs';
/**
 * @summary OptionalIdentifier
 * @description
 *
 * ### ASN.1 Definition:
 *
 * ```asn1
 * OptionalIdentifier  ::=  CHOICE {present  Identifier,
 *                                absent   NULL
 * }
 * ```
 */
export type OptionalIdentifier = {
    present: Identifier;
} | {
    absent: NULL;
};
/**
 * @summary Decodes an ASN.1 element into a(n) OptionalIdentifier
 * @function
 * @param {_Element} el The element being decoded.
 * @returns {OptionalIdentifier} The decoded data structure.
 */
export declare function _decode_OptionalIdentifier(el: _Element): OptionalIdentifier;
/**
 * @summary Encodes a(n) OptionalIdentifier into an ASN.1 Element.
 * @function
 * @param value The element being encoded.
 * @param elGetter A function that can be used to get new ASN.1 elements.
 * @returns {_Element} The OptionalIdentifier, encoded as an ASN.1 Element.
 */
export declare function _encode_OptionalIdentifier(value: OptionalIdentifier, elGetter: $.ASN1Encoder<OptionalIdentifier>): _Element;
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