How exactly is foreach implemented in C#?

I imagine a part of it looking like:

var enumerator = TInput.GetEnumerator();
while(enumerator.MoveNext())
{
  // do some stuff here
}

However I'm unsure what's really going on. What methodology is used for returning enumerator.Current for each cycle? Does it return [for each cycle] or does it take an anonymous function or something to execute the body of foreach?

c# foreach language-implementation language-specifications
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