* {@link Parser#parseInvocation(ParserRequest)} this method will return {@code true} and invoker should
     * handle this request as "early failure". In these cases, {@link #options()} usually is absent.
     */
    boolean parsingFailed();

    /**
     * Returns {@code true} if this call happens in "embedded" mode.
     *
     * @see ParserRequest#embedded()
     */
    default boolean embedded() {
        return parserRequest().embedded();

     *
     * @param parserRequest the request containing all necessary information for parsing
     * @return the parsed invoker request. Caller must start by checking {@link InvokerRequest#parsingFailed()} as
     * if there are parser errors, this request may not be fully processed and should immediately be failed.
     */
    @Nonnull
    InvokerRequest parseInvocation(@Nonnull ParserRequest parserRequest);