Created Unassigned: Formula IFERROR not included [9493]

Hi, first of all: Thank you for the ClosedXML-API!

I have a Worksheet with the formula "IFERROR(Auswertung!B113,""""), but I can't get the value.
Is there a possibility to get the cell text without evaluating the formular?
Or could you please integrated the formular in the API.

Thank you