False positive "Unresolved BNF References" for `<<eof>>` if `parserUtilClass` is set

[VladRassokhin]

Example: https://github.com/ant-druha/intellij-powershell/blob/7d804d118095392cc7d7f8d97bb0c3135285ca3c/src/main/resources/PowerShell.bnf#L156

Given
parserUtilClass="com.intellij.plugin.powershell.lang.parser.PowerShellGeneratedParserUtil"

Inspection reports at e.g. line:
private configuration_block_recover ::= !(statement_terminators? ('configuration' | <<eof>> | SQBR_L| statement_stop_tokens))

It seems inspection resolves from parserUtilClass only, without looking up in com.intellij.lang.parser.GeneratedParserUtilBase.

Versions:
Build #IU-233.7784, built on September 21, 2023
org.jetbrains.idea.grammar (2022.3.2)

[VladRassokhin]

That could be workaround by PowerShellGeneratedParserUtil extends GeneratedParserUtilBase, but given that parser generator works fine without that, it would be nice to fix inspection as well.

[VladRassokhin]

UPD: Turns out bnf was incorrect indeed. It used parserImports=["static com.intellij.lang.parser.GeneratedParserUtilBase.*;"] trick.

[gregsh]

I think the static import trick is ok. We need to fix the resolution algo...

[VladRassokhin]

Will submit MR shortly