/**
 * @desc Metadata corresponding to an {@link Entity} that represents an object.
 *
 * An {@link Entity} represents an object when {@link Entity#isObject} is ````true````
 *
 * A MetaObject corresponds to an {@link Entity} by having the same {@link MetaObject#id} as the {@link Entity#id}.
 *
 * A MetaObject is created within {@link MetaScene#createMetaModel} and belongs to a {@link MetaModel}.
 *
 * Each MetaObject is registered by {@link MetaObject#id} in {@link MetaScene#metaObjects}.
 *
 * A {@link MetaModel} represents its object structure with a tree of MetaObjects, with {@link MetaModel#rootMetaObject} referencing
 * the root MetaObject.
 *
 * @class MetaObject
 */
export class MetaObject {
    constructor(metaModel: any, id: any, originalSystemId: any, name: any, type: any, properties: any, parent: any, children: any, external: any);
    /**
     * Model metadata.
     *
     * @property metaModel
     * @type {MetaModel}
     */
    metaModel: any;
    /**
     * Globally-unique ID.
     *
     * MetaObject instances are registered by this ID in {@link MetaScene#metaObjects}.
     *
     * @property id
     * @type {String|Number}
     */
    id: string | number;
    /**
     * ID of the corresponding object within the originating system, if any.
     *
     * @type {String}
     * @abstract
     */
    originalSystemId: string;
    /**
     * Human-readable name.
     *
     * @property name
     * @type {String}
     */
    name: string;
    /**
     * Type - often an IFC product type.
     *
     * @property type
     * @type {String}
     */
    type: string;
    /**
     * Arbitrary metadata properties.
     *
     * Undefined when no metadata properties are represented.
     *
     * @property properties
     * @type {*}
     */
    properties: any;
    /**
     * The parent MetaObject within the structure hierarchy.
     *
     * Undefined when this is the root of its structure.
     *
     * @property parent
     * @type {MetaObject}
     */
    parent: MetaObject;
    /**
     * Child ObjectMeta instances within the structure hierarchy.
     *
     * Undefined when there are no children.
     *
     * @property children
     * @type {Array}
     */
    children: any[];
    /**
     * External application-specific metadata
     *
     * Undefined when there are is no external application-specific metadata.
     *
     * @property external
     * @type {*}
     */
    external: any;
    /**
     * Gets the {@link MetaObject#id}s of the {@link MetaObject}s within the subtree.
     *
     * @returns {String[]} Array of {@link MetaObject#id}s.
     */
    getObjectIDsInSubtree(): string[];
    /**
     * Iterates over the {@link MetaObject}s within the subtree.
     *
     * @param {Function} callback Callback fired at each {@link MetaObject}.
     */
    withMetaObjectsInSubtree(callback: Function): void;
    /**
     * Gets the {@link MetaObject#id}s of the {@link MetaObject}s within the subtree that have the given {@link MetaObject#type}s.
     *
     * @param {String[]} types {@link MetaObject#type} values.
     * @returns {String[]} Array of {@link MetaObject#id}s.
     */
    getObjectIDsInSubtreeByType(types: string[]): string[];
    /**
     * Returns properties of this MeteObject as JSON.
     *
     * @returns {{id: (String|Number), type: String, name: String, parent: (String|Number|Undefined)}}
     */
    getJSON(): {
        id: (string | number);
        type: string;
        name: string;
        parent: (string | number | undefined);
    };
}