PdfCleanUpLocation to type .IList’1PdfCleanUpLocation
How to solve this problem "Unable to cast object of type 'iTextSharp.xtra.iTextSharp.text.pdf.pdfcleanup.PdfCleanUpLocation' to type 'System.Collections.Generic.IList`1[iTextSharp.xtra.iTextSharp.text.pdf.pdfcleanup.PdfCleanUpLocation]' in vb.net". ?