gets the prefix name . concode_field_sep int extensionLevel concode_elem_sep PdfDeveloperExtension ADOBE_1_7_EXTENSIONLEVEL3 concode_elem_sep PdfName prefix concode_elem_sep PdfDeveloperExtension ESIC_1_7_EXTENSIONLEVEL5 concode_elem_sep PdfDeveloperExtension ESIC_1_7_EXTENSIONLEVEL2 concode_elem_sep PdfName baseversion concode_field_sep PdfName getBaseversion concode_elem_sep PdfDictionary getDeveloperExtensions concode_elem_sep int getExtensionLevel
PdfName function ( ) { return prefix ; }