We had this elaborate scheme with an array of strings instead of a bunch of a normal string fields. If there were hundreds of those strings, this would make sense. But we had just five and one was actually a bit different because it had a fallback, so overall, the code is easier to read when normal fields are used. The fallback was implemented in the accessor function, now it's actually implemented in the place where it's used. While at it, rename the variables so that they match the config keys for legibility.
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