question: public void write ( OutputStream os ) throws IOException { ByteCodeWriter out = new ByteCodeWriter ( os , this ) ; out . writeInt ( MAGIC ) ; out . writeShort ( _minor ) ; out . writeShort ( _major ) ; _constantPool . write ( out ) ; out . writeShort ( _accessFlags ) ; out . writeClass ( _thisClass ) ; out . writeClass ( _superClass ) ; out . writeShort ( _interfaces . size ( ) ) ; for ( int i = 0 ; i < _interfaces . size ( ) ; i ++ ) { String className = _interfaces . get ( i ) ; out . writeClass ( className ) ; } out . writeShort ( _fields . size ( ) ) ; for ( int i = 0 ; i < _fields . size ( ) ; i ++ ) { JavaField field = _fields . get ( i ) ; field . write ( out ) ; } out . writeShort ( _methods . size ( ) ) ; for ( int i = 0 ; i < _methods . size ( ) ; i ++ ) { JavaMethod method = _methods . get ( i ) ; method . write ( out ) ; } out . writeShort ( _attributes . size ( ) ) ; for ( int i = 0 ; i < _attributes . size ( ) ; i ++ ) { Attribute attr = _attributes . get ( i ) ; attr . write ( out ) ; } }
target:  Writes the class to the output.