import { EndpointParameterInstructions } from "@aws-sdk/middleware-endpoint";
import { Command as $Command } from "@aws-sdk/smithy-client";
import { Handler, HttpHandlerOptions as __HttpHandlerOptions, MetadataBearer as __MetadataBearer, MiddlewareStack } from "@aws-sdk/types";
import { EC2ClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../EC2Client";
import { AssociateVpcCidrBlockRequest, AssociateVpcCidrBlockResult } from "../models/models_0";
/**
 * The input for {@link AssociateVpcCidrBlockCommand}.
 */
export interface AssociateVpcCidrBlockCommandInput extends AssociateVpcCidrBlockRequest {
}
/**
 * The output of {@link AssociateVpcCidrBlockCommand}.
 */
export interface AssociateVpcCidrBlockCommandOutput extends AssociateVpcCidrBlockResult, __MetadataBearer {
}
/**
 * <p>Associates a CIDR block with your VPC. You can associate a secondary IPv4 CIDR block,
 *             an Amazon-provided IPv6 CIDR block, or an IPv6 CIDR block from an IPv6 address pool that
 *             you provisioned through bring your own IP addresses (<a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-byoip.html">BYOIP</a>). The IPv6 CIDR block size is fixed
 *             at /56.</p>
 *          <p>You must specify one of the following in the request: an IPv4 CIDR block, an IPv6
 *             pool, or an Amazon-provided IPv6 CIDR block.</p>
 *          <p>For more information about associating CIDR blocks with your VPC and applicable
 *             restrictions, see <a href="https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Subnets.html#VPC_Sizing">VPC and subnet sizing</a> in the
 *                 <i>Amazon Virtual Private Cloud User Guide</i>.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { EC2Client, AssociateVpcCidrBlockCommand } from "@aws-sdk/client-ec2"; // ES Modules import
 * // const { EC2Client, AssociateVpcCidrBlockCommand } = require("@aws-sdk/client-ec2"); // CommonJS import
 * const client = new EC2Client(config);
 * const command = new AssociateVpcCidrBlockCommand(input);
 * const response = await client.send(command);
 * ```
 *
 * @see {@link AssociateVpcCidrBlockCommandInput} for command's `input` shape.
 * @see {@link AssociateVpcCidrBlockCommandOutput} for command's `response` shape.
 * @see {@link EC2ClientResolvedConfig | config} for EC2Client's `config` shape.
 *
 */
export declare class AssociateVpcCidrBlockCommand extends $Command<AssociateVpcCidrBlockCommandInput, AssociateVpcCidrBlockCommandOutput, EC2ClientResolvedConfig> {
    readonly input: AssociateVpcCidrBlockCommandInput;
    static getEndpointParameterInstructions(): EndpointParameterInstructions;
    constructor(input: AssociateVpcCidrBlockCommandInput);
    /**
     * @internal
     */
    resolveMiddleware(clientStack: MiddlewareStack<ServiceInputTypes, ServiceOutputTypes>, configuration: EC2ClientResolvedConfig, options?: __HttpHandlerOptions): Handler<AssociateVpcCidrBlockCommandInput, AssociateVpcCidrBlockCommandOutput>;
    private serialize;
    private deserialize;
}
