question: returns the number of free objects detected . this may be called after readnextobject returns false , signifying that all the objects have been read and all the free objects counted . concode_field_sep int _bytesPerEntry concode_elem_sep int[] _index concode_elem_sep int[] _fieldSizes concode_elem_sep int _entriesRead concode_elem_sep int _objType concode_elem_sep int _objField2 concode_elem_sep int _size concode_elem_sep int _objField1 concode_elem_sep PdfStream _xstrm concode_elem_sep int _freeCount concode_elem_sep PdfDictionary _dict concode_elem_sep Filter[] _filters concode_elem_sep long _prevXref concode_elem_sep int _objNum concode_field_sep boolean isObjCompressed concode_elem_sep int getContentStreamObjNum concode_elem_sep int getObjNum concode_elem_sep long getPrevXref concode_elem_sep int getNumObjects concode_elem_sep boolean isValid concode_elem_sep int getOffset concode_elem_sep boolean readNextObject concode_elem_sep void initRead concode_elem_sep int getContentStreamIndex
target: int function ( ) { return _freeCount ; }