import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { ModifyDBSubnetGroupMessage, ModifyDBSubnetGroupResult } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
/**
 * @public
 *
 * The input for {@link ModifyDBSubnetGroupCommand}.
 */
export interface ModifyDBSubnetGroupCommandInput extends ModifyDBSubnetGroupMessage {
}
/**
 * @public
 *
 * The output of {@link ModifyDBSubnetGroupCommand}.
 */
export interface ModifyDBSubnetGroupCommandOutput extends ModifyDBSubnetGroupResult, __MetadataBearer {
}
declare const ModifyDBSubnetGroupCommand_base: {
    new (input: ModifyDBSubnetGroupCommandInput): import("@smithy/core/client").CommandImpl<ModifyDBSubnetGroupCommandInput, ModifyDBSubnetGroupCommandOutput, import("..").DocDBClientResolvedConfig, import("..").ServiceInputTypes, import("..").ServiceOutputTypes>;
    new (input: ModifyDBSubnetGroupCommandInput): import("@smithy/core/client").CommandImpl<ModifyDBSubnetGroupCommandInput, ModifyDBSubnetGroupCommandOutput, import("..").DocDBClientResolvedConfig, import("..").ServiceInputTypes, import("..").ServiceOutputTypes>;
    getEndpointParameterInstructions(): import("@smithy/types").EndpointParameterInstructions;
};
/**
 * <p>Modifies an existing subnet group. subnet groups must contain at least one subnet in at least two Availability Zones in the Amazon Web Services Region.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { DocDBClient, ModifyDBSubnetGroupCommand } from "@aws-sdk/client-docdb"; // ES Modules import
 * // const { DocDBClient, ModifyDBSubnetGroupCommand } = require("@aws-sdk/client-docdb"); // CommonJS import
 * // import type { DocDBClientConfig } from "@aws-sdk/client-docdb";
 * const config = {}; // type is DocDBClientConfig
 * const client = new DocDBClient(config);
 * const input = { // ModifyDBSubnetGroupMessage
 *   DBSubnetGroupName: "STRING_VALUE", // required
 *   DBSubnetGroupDescription: "STRING_VALUE",
 *   SubnetIds: [ // SubnetIdentifierList // required
 *     "STRING_VALUE",
 *   ],
 * };
 * const command = new ModifyDBSubnetGroupCommand(input);
 * const response = await client.send(command);
 * // { // ModifyDBSubnetGroupResult
 * //   DBSubnetGroup: { // DBSubnetGroup
 * //     DBSubnetGroupName: "STRING_VALUE",
 * //     DBSubnetGroupDescription: "STRING_VALUE",
 * //     VpcId: "STRING_VALUE",
 * //     SubnetGroupStatus: "STRING_VALUE",
 * //     Subnets: [ // SubnetList
 * //       { // Subnet
 * //         SubnetIdentifier: "STRING_VALUE",
 * //         SubnetAvailabilityZone: { // AvailabilityZone
 * //           Name: "STRING_VALUE",
 * //         },
 * //         SubnetStatus: "STRING_VALUE",
 * //       },
 * //     ],
 * //     DBSubnetGroupArn: "STRING_VALUE",
 * //     SupportedNetworkTypes: [ // NetworkTypeList
 * //       "STRING_VALUE",
 * //     ],
 * //   },
 * // };
 *
 * ```
 *
 * @param ModifyDBSubnetGroupCommandInput - {@link ModifyDBSubnetGroupCommandInput}
 * @returns {@link ModifyDBSubnetGroupCommandOutput}
 * @see {@link ModifyDBSubnetGroupCommandInput} for command's `input` shape.
 * @see {@link ModifyDBSubnetGroupCommandOutput} for command's `response` shape.
 * @see {@link DocDBClientResolvedConfig | config} for DocDBClient's `config` shape.
 *
 * @throws {@link DBSubnetGroupDoesNotCoverEnoughAZs} (client fault)
 *  <p>Subnets in the subnet group should cover at least two Availability Zones unless there is only one Availability Zone.</p>
 *
 * @throws {@link DBSubnetGroupNotFoundFault} (client fault)
 *  <p>
 *             <code>DBSubnetGroupName</code> doesn't refer to an existing subnet group. </p>
 *
 * @throws {@link DBSubnetQuotaExceededFault} (client fault)
 *  <p>The request would cause you to exceed the allowed number of subnets in a subnet group.</p>
 *
 * @throws {@link InvalidSubnet} (client fault)
 *  <p>The requested subnet is not valid, or multiple subnets were requested that are not all
 *             in a common virtual private cloud (VPC).</p>
 *
 * @throws {@link SubnetAlreadyInUse} (client fault)
 *  <p>The subnet is already in use in the Availability Zone.</p>
 *
 * @throws {@link DocDBServiceException}
 * <p>Base exception class for all service exceptions from DocDB service.</p>
 *
 *
 * @public
 */
export declare class ModifyDBSubnetGroupCommand extends ModifyDBSubnetGroupCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: ModifyDBSubnetGroupMessage;
            output: ModifyDBSubnetGroupResult;
        };
        sdk: {
            input: ModifyDBSubnetGroupCommandInput;
            output: ModifyDBSubnetGroupCommandOutput;
        };
    };
}