@Override public void fill(ByteBuffer buffer,long id){
  buffer.put(EVENTID_BYTE);
  buffer.put((byte)id);
}

@ Override public void fill ( ByteBuffer buffer , long id ) { buffer . put ( EVENTID_BYTE ) ; buffer . put ( ( byte ) id ) ; }
writes the given ' id ' to the given buffer as ' byte ' preceeded by a token indicating that it is written as ' byte ' type .
