resources/messages/attributeDescriptions/fallbackStubElementType.html (10 lines of code) (raw):
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<p>Allows specifying a fallback class to use for an elementType in the constructor of stub elements.</p>
<p>Usually the parser generator looks into the parent class file to detect which class to use.
But in some cases the parent class file may not be available (not yet compiled).
In this case, it uses `IStubElementType` by default, which may not be the case in the modern code when `IElementType` should be used.
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<p>This is per parser option. It does not allow overriding the default per rule.</p>
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