/**
 * A registry of Extension Points.
 */
export default interface ExtensionPointRegistry {
    /**
     * Register a specified Extension Point.
     *
     * @param extensionPoint the Extension Point to register
     */
    register(extensionPoint: string): Promise<void>;
    /**
     * Return all registered Extension Points.
     *
     * @return Set of Extension Points
     */
    getAll(): Promise<ReadonlySet<string>>;
    /**
     * Returns `true` if the specified Extension Point has been registered.
     *
     * @param extensionPoint the Extension Point to check
     */
    isRegistered(extensionPoint: string): Promise<boolean>;
}
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