import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Removes the pinned message from a chat; requires appropriate administrator rights
 * in the group or channel
 * @param {Object} params
 * @param {number} [params.chatId] - Identifier of the chat
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type UnpinChatMessageMethod = <ResponseT = OkUnion>(params: UnpinChatMessageParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface UnpinChatMessageParams {
    /** Identifier of the chat */
    chatId?: number;
}