/// <summary>
        /// Immediately ends and executes the pipeline function and returns the output.
        /// </summary>
        /// <param name="pipeline">The pipeline link.</param>
        /// <param name="input">The input to the pipeline function.</param>
        /// <returns>The output of the pipeline function.</returns>
        public static TOut Run <TOut, TFirst>(this IPipelineLink <TOut, TFirst> pipeline, TFirst input)
        {
            if (pipeline is null)
            {
                throw new ArgumentNullException(nameof(pipeline));
            }

            var func = pipeline.End();

            return(func.Invoke(input));
        }
        /// <summary>
        /// Ends the pipeline chain and returns the pipeline function.
        /// </summary>
        /// <returns>The pipeline function as an awaitable Task.</returns>
        public static Func <TFirst, Task <TIn> > EndAsync <TIn, TFirst>(this IPipelineLink <TIn, TFirst> pipeline)
        {
            if (pipeline is null)
            {
                throw new ArgumentNullException(nameof(pipeline));
            }

            var func = pipeline.End();

            return(input => Task.FromResult(func.Invoke(input)));
        }
        /// <summary>
        /// Inserts another pipeline into the current pipeline.
        /// </summary>
        /// <param name="pipeline">The pipeline link.</param>
        /// <param name="other">The pipeline to insert.</param>
        public static IPipelineLink <TOut, TFirst> Insert <TIn, TOut, TFirst>(this IPipelineLink <TIn, TFirst> pipeline,
                                                                              IPipelineLink <TOut, TIn> other)
        {
            if (pipeline is null)
            {
                throw new ArgumentNullException(nameof(pipeline));
            }

            if (other is null)
            {
                throw new ArgumentNullException(nameof(other));
            }

            var otherFunc = other.End();

            return(pipeline.Next(otherFunc));
        }