question: public static int [ ] checkObjectStart ( PdfTokenizer lineTokenizer ) { try { lineTokenizer . seek ( 0 ) ; if ( ! lineTokenizer . nextToken ( ) || lineTokenizer . getTokenType ( ) != TokenType . Number ) return null ; int num = lineTokenizer . getIntValue ( ) ; if ( ! lineTokenizer . nextToken ( ) || lineTokenizer . getTokenType ( ) != TokenType . Number ) return null ; int gen = lineTokenizer . getIntValue ( ) ; if ( ! lineTokenizer . nextToken ( ) ) return null ; if ( ! Arrays . equals ( Obj , lineTokenizer . getByteContent ( ) ) ) return null ; return new int [ ] { num , gen } ; } catch ( Exception ioe ) { } return null ; }
target:  Check whether line starts with object declaration.