import React from 'react';
export declare const TargetKey: () => React.JSX.Element;
export declare const ThroughCollection: () => React.JSX.Element;
export declare const SourceKey: () => React.JSX.Element;
export declare const ForeignKey: () => React.JSX.Element;
export declare const ForeignKey1: () => React.JSX.Element;
export declare const ForeignKey2: () => React.JSX.Element;
