declare class MessageMixin {
    protected headers: Record<string, any>;
    protected protocal: string;
    protected content: Buffer;
    getProtocolVersion(): string;
    withProtocolVersion(protocal: string): this;
    getHeaders(): Record<string, any>;
    hasHeader(name: string): boolean;
    getHeader(name: string): any;
    getHeaderLine(name: string): any;
    withHeader(name: string, value: string | string[]): this;
    withAddedHeader(name: string, value: string | string[]): this;
    withoutHeader(name: string): this;
    getBody(): Buffer;
    withBody(body: any): this;
    /**
     * 设置headers
     * @param headers
     * @returns
     */
    protected setHeaders(headers: Record<string, any>): this;
}
export = MessageMixin;