Namespace Org.Apache.Pdfbox.Util.Filetypedetector Classes FileType https://www.javadoc.io/doc/org.apache.pdfbox/pdfbox/3.0.5/org/apache/pdfbox/util/filetypedetector/FileType.html FileTypeDetector https://www.javadoc.io/doc/org.apache.pdfbox/pdfbox/3.0.5/org/apache/pdfbox/util/filetypedetector/FileTypeDetector.html