/**
 * Rule: Abstract Must Be Subclassed
 * ---------------------------------
 * Ensures that every abstract declaration in the model has at least one concrete subclass.
 * This helps prevent unused or orphaned abstract types, enforcing better model design.
 */
declare const _default: {
    given: string;
    severity: number;
    then: {
        function: import("@stoplight/spectral-core").IFunction;
    };
};
export default _default;