@Path("subscriptionId") String subscriptionId, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);          @Headers({ "Content-Type: application/json; charset=utf-0", "x-ms-logging-context: com.microsoft.azure.management.network.v0000_00_00.FirewallPolicies listByResourceGroupNext" })         @GET         Observable<Response<ResponseBody>> listByResourceGroupNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);          @Headers({ "Content-Type: application/json; charset=utf-0", "x-ms-logging-context: com.microsoft.azure.management.network.v0000_00_00.FirewallPolicies listNext" })         @GET         Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);      }      /**      * Deletes the specified Firewall Policy.      *      * @param resourceGroupName The name of the resource group.      * @param firewallPolicyName The name of the Firewall Policy.      * @throws IllegalArgumentException thrown if parameters fail the validation      * @throws CloudException thrown if the request is rejected by server      * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent      */     public void 