C# : Can't decide between Task IActionResult , IActionResult and ActionResult Thing

C# : Can't decide between Task IActionResult , IActionResult and ActionResult Thing
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As promised, I have a hidden feature that I want to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
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Your YouTube progress bar will transform into a flashing rainbow.

A quick introduction about me,
Hello everyone, I'm Delphi.
I am willing to help you find the solutions to your questions.
C# : Can't decide between Task IActionResult , IActionResult and ActionResult Thing
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