<description>This is the file specification used to activate the profile. The {@code missing} value
        is the location of a file that needs to exist, and if it doesn't, the profile will be
        activated. On the other hand, {@code exists} will test for the existence of the file and if it is
        there, the profile will be activated.

        JvmPackageNameMustBeValidNameImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirJvmErrors.JVM_PACKAGE_NAME_NOT_SUPPORTED_IN_FILES_WITH_CLASSES) { firDiagnostic ->
        JvmPackageNameNotSupportedInFilesWithClassesImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }