/// <reference types="node" />
import * as __aws_sdk_middleware_stack from "@aws-sdk/middleware-stack";
import * as __aws_sdk_types from "@aws-sdk/types";
import * as _stream from "stream";
import { InputTypesUnion } from "../types/InputTypesUnion";
import { OutputTypesUnion } from "../types/OutputTypesUnion";
import { GetActivityTaskInput } from "../types/GetActivityTaskInput";
import { GetActivityTaskOutput } from "../types/GetActivityTaskOutput";
import { SFNResolvedConfiguration } from "../SFNConfiguration";
export * from "../types/GetActivityTaskInput";
export * from "../types/GetActivityTaskOutput";
export * from "../types/GetActivityTaskExceptionsUnion";
export declare class GetActivityTaskCommand implements __aws_sdk_types.Command<InputTypesUnion, GetActivityTaskInput, OutputTypesUnion, GetActivityTaskOutput, SFNResolvedConfiguration, _stream.Readable> {
    readonly input: GetActivityTaskInput;
    readonly model: __aws_sdk_types.OperationModel;
    readonly middlewareStack: __aws_sdk_middleware_stack.MiddlewareStack<GetActivityTaskInput, GetActivityTaskOutput, _stream.Readable>;
    constructor(input: GetActivityTaskInput);
    resolveMiddleware(clientStack: __aws_sdk_middleware_stack.MiddlewareStack<InputTypesUnion, OutputTypesUnion, _stream.Readable>, configuration: SFNResolvedConfiguration): __aws_sdk_types.Handler<GetActivityTaskInput, GetActivityTaskOutput>;
}