private static void invokeCallback(ResultCallback callback, Consumer<ResultCallback> invocation) {
        try {
            invocation.accept(callback);
        } catch (Throwable t) {
            // Just log the exception/error and keep result executor alive (don't rethrow)
            log.log(Level.WARNING, "Got exception during invocation on ResultCallback: " + t, t);
        }
    }
Same as {@link #feedMany(InputStream, ResultCallback)}, but without a provided {@link ResultCallback} instance.
@see JsonFeeder#feedMany(InputStream, ResultCallback) for details.
vespa-feed-client-api/src/main/java/ai/vespa/feed/client/JsonFeeder.java