void addMetaData ContentData metaData size_t size metaData getSize Dat

         void addMetaData(ContentData & metaData)
            {
                size_t size = metaData.getSize();
                
                DataInfo data(metaData);
                data.setFlag(DataInfo::STOP_DECODE);
                const uint8_t * ptr = 0;

                if ( metaData.getData(ptr, size) == size )
                {
                    data.extraInfo.encoding = checkUtf8( (const char *)ptr, size ) ? UTF8 : UTF16;
                }
                else
                {
                    DecoderTmpBuffer buf(*_ctx.allocator);
                    buf.create(size);

                    DecoderDataChunk descr;
                    
                    for ( bool success = metaData.getFirstBlock( descr ); success; success = metaData.getNextBlock( descr ) )
                        buf.write( descr.data, descr.size );

                    data.extraInfo.encoding = checkUtf8( (const char *)buf.getData(), buf.size() ) ? UTF8 : UTF16;
                }
                
                _nestedData.push_back(data);
            }