public Task<Result> Push(Firebase reference, object content = null)
        {
            CheckDisposed();

            ArgUtils.CheckForNull(reference, nameof(reference));

            var request = new PushRequest(reference, content);
            return PerformRequest(request);
        }
        public Task <Result> Push(Firebase reference, object content = null)
        {
            CheckDisposed();

            ArgUtils.CheckForNull(reference, nameof(reference));

            var request = new PushRequest(reference, content);

            return(PerformRequest(request));
        }