import type { ModelEntryReference } from '../types/malloy-element';
import type { Source } from '../source-elements/source';
import { SourceQueryElement } from './source-query-element';
import type { QueryElement } from '../types/query-element';
import type { Argument } from '../parameters/argument';
/**
 * A reference to either a source or a query.
 *
 * e.g. `flights`
 */
export declare class SQReference extends SourceQueryElement {
    readonly ref: ModelEntryReference;
    readonly args?: Argument[] | undefined;
    elementType: string;
    asSource?: Source;
    constructor(ref: ModelEntryReference, args?: Argument[] | undefined);
    getQuery(): QueryElement | undefined;
    isSource(): boolean;
    getSource(): Source | undefined;
}