Rails - Oct 2014 - :to argument to match() -- how is it converted to class/method name

Is there any documentation for how the match command converts the
":to"
argument to a class and method name?

If I have
   match '<path>', to:
'<sort-of-a-class-name>#<sort-of-a-method-name>',
	via: :get
How does it go from <sort-of-a-class-name> to <actual-class-name>,
and
more importantly, how do I go in the reverse direction?

I can probably figure this out via trial-and-error, but I'd like to see
docs if there are some, or contribute some docs if not.

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