import { Observable } from "rxjs";
import { HttpRequest } from "../request";
/**
 * Constructs an instance of `HttpRequestOptions<T>` from a source `HttpMethodOptions` and
 * the given `body`. This function clones the object and adds the body.
 *
 * Note that the `responseType` *options* value is a String that identifies the
 * single data type of the response.
 * A single overload version of the method handles each response type.
 * The value of `responseType` cannot be a union, as the combined signature could imply.
 *
 */
export declare function addBody<T>(options: any, body: T | null): any;
/** ================== COMMON HANDLE METHOD ========================== */
export declare function handle(req: HttpRequest<any>): Observable<object>;