Allow the user to set order of prefixes #2892
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Current implementation used HashSet which sorts prefixes by their hash, and empty string "" was put before probably any other prefix (at least before very common "_"). Then, it matched first and underscore never matched so it was not possible to automatically remove _ prefixes from property names.
There is a need to include this empty string if you want prefixes only for underscore prefix removal and not for filtering properties.
This will allow workaround for this bug: IDEA-363722