import { Command as $Command } from "@smithy/core/client";
import type { MetadataBearer as __MetadataBearer } from "@smithy/types";
import type { GreengrassClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../GreengrassClient";
import type { GetGroupCertificateAuthorityRequest, GetGroupCertificateAuthorityResponse } from "../models/models_0";
/**
 * @public
 */
export type { __MetadataBearer };
export { $Command };
/**
 * @public
 *
 * The input for {@link GetGroupCertificateAuthorityCommand}.
 */
export interface GetGroupCertificateAuthorityCommandInput extends GetGroupCertificateAuthorityRequest {
}
/**
 * @public
 *
 * The output of {@link GetGroupCertificateAuthorityCommand}.
 */
export interface GetGroupCertificateAuthorityCommandOutput extends GetGroupCertificateAuthorityResponse, __MetadataBearer {
}
declare const GetGroupCertificateAuthorityCommand_base: {
    new (input: GetGroupCertificateAuthorityCommandInput): import("@smithy/core/client").CommandImpl<GetGroupCertificateAuthorityCommandInput, GetGroupCertificateAuthorityCommandOutput, GreengrassClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    new (input: GetGroupCertificateAuthorityCommandInput): import("@smithy/core/client").CommandImpl<GetGroupCertificateAuthorityCommandInput, GetGroupCertificateAuthorityCommandOutput, GreengrassClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes>;
    getEndpointParameterInstructions(): {
        [x: string]: unknown;
    };
};
/**
 * Retreives the CA associated with a group. Returns the public key of the CA.
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { GreengrassClient, GetGroupCertificateAuthorityCommand } from "@aws-sdk/client-greengrass"; // ES Modules import
 * // const { GreengrassClient, GetGroupCertificateAuthorityCommand } = require("@aws-sdk/client-greengrass"); // CommonJS import
 * // import type { GreengrassClientConfig } from "@aws-sdk/client-greengrass";
 * const config = {}; // type is GreengrassClientConfig
 * const client = new GreengrassClient(config);
 * const input = { // GetGroupCertificateAuthorityRequest
 *   CertificateAuthorityId: "STRING_VALUE", // required
 *   GroupId: "STRING_VALUE", // required
 * };
 * const command = new GetGroupCertificateAuthorityCommand(input);
 * const response = await client.send(command);
 * // { // GetGroupCertificateAuthorityResponse
 * //   GroupCertificateAuthorityArn: "STRING_VALUE",
 * //   GroupCertificateAuthorityId: "STRING_VALUE",
 * //   PemEncodedCertificate: "STRING_VALUE",
 * // };
 *
 * ```
 *
 * @param GetGroupCertificateAuthorityCommandInput - {@link GetGroupCertificateAuthorityCommandInput}
 * @returns {@link GetGroupCertificateAuthorityCommandOutput}
 * @see {@link GetGroupCertificateAuthorityCommandInput} for command's `input` shape.
 * @see {@link GetGroupCertificateAuthorityCommandOutput} for command's `response` shape.
 * @see {@link GreengrassClientResolvedConfig | config} for GreengrassClient's `config` shape.
 *
 * @throws {@link BadRequestException} (client fault)
 *  General error information.
 *
 * @throws {@link InternalServerErrorException} (server fault)
 *  General error information.
 *
 * @throws {@link GreengrassServiceException}
 * <p>Base exception class for all service exceptions from Greengrass service.</p>
 *
 *
 * @public
 */
export declare class GetGroupCertificateAuthorityCommand extends GetGroupCertificateAuthorityCommand_base {
    /** @internal type navigation helper, not in runtime. */
    protected static __types: {
        api: {
            input: GetGroupCertificateAuthorityRequest;
            output: GetGroupCertificateAuthorityResponse;
        };
        sdk: {
            input: GetGroupCertificateAuthorityCommandInput;
            output: GetGroupCertificateAuthorityCommandOutput;
        };
    };
}