import { AbstractCommand } from '../AbstractCommand';
import { Document } from '../../core/models/Document';
/**
 * A command used to create a new message definition item in aa AsyncAPI document.
 * @author laurent.broudoux@gmail.com
 * @param {string} newName
 * @param {string} newDescription
 * @class
 * @extends AbstractCommand
 */
export declare class NewMessageDefinitionCommand extends AbstractCommand {
    _newName: string;
    _newDescription: string;
    _nullComponents: boolean;
    _defExisted: boolean;
    constructor(newName?: any, newDescription?: any);
    /**
     *
     * @param {Document} document
     */
    execute(document: Document): void;
    /**
     *
     * @param {Document} document
     */
    undo(document: Document): void;
}