public HttpResponse withHeader(String name, String... values) {
        this.headers.withEntry(name, values);
        return this;
    }
public HttpResponse withHeader ( String name , String ... values ) { this . headers . withEntry ( name , values ) ; return this ; }
Add a header to return as a Header object, if a header with
the same name already exists this will NOT be modified but
two headers will exist

@param name   the header name
@param values the header values