/**
 * 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 } from '@finos/legend-shared';
import { InstanceValue } from './InstanceValue.js';
import type { ValueSpecification, ValueSpecificationVisitor } from './ValueSpecification.js';
export declare class KeyExpression implements Hashable {
    add: boolean | undefined;
    key: InstanceValue;
    expression: ValueSpecification;
    constructor(key: InstanceValue, expression: ValueSpecification, add: boolean | undefined);
    get hashCode(): string;
}
export declare class KeyExpressionInstanceValue extends InstanceValue implements Hashable {
    values: KeyExpression[];
    constructor();
    accept_ValueSpecificationVisitor<T>(visitor: ValueSpecificationVisitor<T>): T;
    get hashCode(): string;
}
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