/**
 * Copyright (c) 2020-present, Goldman Sachs
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { type Hashable, type PlainObject } from '@finos/legend-shared';
import { type ValueSpecificationVisitor, ValueSpecification } from './ValueSpecification.js';
/**
 * This value specification is used to hold a value specification type that we can't yet handle
 * It wraps the protocol JSON of the unknown value specification.
 *
 * @internal This type is specific to Studio only, not a standard, recognizeable in Pure/engine.
 */
export declare class INTERNAL__UnknownValueSpecification extends ValueSpecification implements Hashable {
    readonly content: PlainObject;
    constructor(content: PlainObject);
    get hashCode(): string;
    accept_ValueSpecificationVisitor<T>(visitor: ValueSpecificationVisitor<T>): T;
}
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