/**
 * A reusable set of identifier fields used to reference other entities in relationship contexts. Each field holds a keyword array of identifiers following the same conventions as the corresponding ECS root field. Only the fields defined in this field set might appear, ad-hoc or integration-specific property names are not allowed.
 */
export interface EcsEntityReference {
    entity?: {
        /**
         * Identifiers of referenced entities, using the same meaning as root `entity.id` (stable id for correlation within scope).
         */
        id?: string | Array<string>;
    };
    host?: {
        /**
         * Referenced host ids.
         */
        id?: string | Array<string>;
        /**
         * Referenced host names.
         */
        name?: string | Array<string>;
    };
    service?: {
        /**
         * Referenced service ids.
         */
        id?: string | Array<string>;
        /**
         * Referenced service names.
         */
        name?: string | Array<string>;
    };
    user?: {
        /**
         * Referenced user directory or AD/LDAP domain names (same semantics as ECS `user.domain`).
         */
        domain?: string | Array<string>;
        /**
         * Referenced user email addresses.
         */
        email?: string | Array<string>;
        /**
         * Referenced user ids.
         */
        id?: string | Array<string>;
        /**
         * Referenced user short names or logins.
         */
        name?: string | Array<string>;
    };
}