import { Command as $Command } from "@smithy/core/client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { ListVersionsRequest, ListVersionsResponse } from "../models/models_0";
import type { OpenSearchClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../OpenSearchClient";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link ListVersionsCommand}.
 */
export interface ListVersionsCommandInput extends ListVersionsRequest {
}
/**
 * @public
 *
 * The output of {@link ListVersionsCommand}.
 */
export interface ListVersionsCommandOutput extends ListVersionsResponse, __MetadataBearer {
}
declare const ListVersionsCommand_base: {
    new (input: ListVersionsCommandInput): import("@smithy/core/client").CommandImpl<ListVersionsCommandInput, ListVersionsCommandOutput, OpenSearchClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (...[input]: [] | [ListVersionsCommandInput]): import("@smithy/core/client").CommandImpl<ListVersionsCommandInput, ListVersionsCommandOutput, OpenSearchClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): {
        [x: string]: unknown;
    };
};
/**
 * <p>Lists all versions of OpenSearch and Elasticsearch that Amazon OpenSearch Service
 *             supports.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { OpenSearchClient, ListVersionsCommand } from "@aws-sdk/client-opensearch"; // ES Modules import
 * // const { OpenSearchClient, ListVersionsCommand } = require("@aws-sdk/client-opensearch"); // CommonJS import
 * // import type { OpenSearchClientConfig } from "@aws-sdk/client-opensearch";
 * const config = {}; // type is OpenSearchClientConfig
 * const client = new OpenSearchClient(config);
 * const input = { // ListVersionsRequest
 *   MaxResults: Number("int"),
 *   NextToken: "STRING_VALUE",
 * };
 * const command = new ListVersionsCommand(input);
 * const response = await client.send(command);
 * // { // ListVersionsResponse
 * //   Versions: [ // VersionList
 * //     "STRING_VALUE",
 * //   ],
 * //   NextToken: "STRING_VALUE",
 * // };
 *
 * ```
 *
 * @param ListVersionsCommandInput - {@link ListVersionsCommandInput}
 * @returns {@link ListVersionsCommandOutput}
 * @see {@link ListVersionsCommandInput} for command's `input` shape.
 * @see {@link ListVersionsCommandOutput} for command's `response` shape.
 * @see {@link OpenSearchClientResolvedConfig | config} for OpenSearchClient's `config` shape.
 *
 * @throws {@link BaseException} (client fault)
 *  <p>An error occurred while processing the request.</p>
 *
 * @throws {@link InternalException} (server fault)
 *  <p>Request processing failed because of an unknown error, exception, or internal failure.</p>
 *
 * @throws {@link ResourceNotFoundException} (client fault)
 *  <p>An exception for accessing or deleting a resource that doesn't exist.</p>
 *
 * @throws {@link ValidationException} (client fault)
 *  <p>An exception for accessing or deleting a resource that doesn't exist.</p>
 *
 * @throws {@link OpenSearchServiceException}
 * <p>Base exception class for all service exceptions from OpenSearch service.</p>
 *
 *
 * @public
 */
export declare class ListVersionsCommand extends ListVersionsCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: ListVersionsRequest;
            output: ListVersionsResponse;
        };
        sdk: {
            input: ListVersionsCommandInput;
            output: ListVersionsCommandOutput;
        };
    };
}