What is getOriginal supposed to return? The original string, or one
that has been fixed up and normalized?
What is toString supposed to return? The same as getOriginal? Or, a
fixed up version? Ie, if there was a parse error, a missing trailing
'}', should toString add this missing character?
Basically, what is supposed to happen when parsing a badly formatted
string, ie, "The class for [${a}] is ${a.getClass()".
Additionally, ${bsh:} and ${groovy:} weren't returning the 'bsh' or
'groovy' part in original.
I've managed to remove some dead code; there were some places that
were testing for an empty parse string, but it was already tested for
in earlier methods.
In any event, I have 100% full coverage now in FSE, and it's test
cases. I don't have coverage on any other helper classes in that
folder, including those that are called by FSE.
