import { ValidationRule } from './validation-rule.js';
import type { Concept } from '../models/concept.js';
import type { ValidationResult } from './validation-result.js';
interface RelatedLike {
    type?: string;
}
export declare class RelationshipTypeRule extends ValidationRule {
    constructor();
    validate(concept: Concept, path: string, result: ValidationResult): void;
    _checkRelated(arr: ReadonlyArray<RelatedLike> | null | undefined, basePath: string, knownTypes: Set<string>, result: ValidationResult): void;
}
export {};
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