PDF.ExtractText fails when no search pattern is provided

The PDF.ExtractText operation states: 

> Extracts raw text from a PDF. If the PDF is encrypted, a password is required.

It accepts misc. parameters, on is patterntofind. This allows for extracting either a single line or part of a line.

The problem is that when you want the full text, you don't pass this parameter and the operation fails with a null pointer.

=> The opération should return the whole text when the patterntofind parameter is not provided (either null or "")

Major because impacting an important prospect we are currently working with.