public void finish(int root_table){
  prep(minalign,SIZEOF_INT);
  addOffset(root_table);
  bb.position(space);
  finished=true;
}

public void finish ( int root_table ) { prep ( minalign , SIZEOF_INT ) ; addOffset ( root_table ) ; bb . position ( space ) ; finished = true ; }
finalize a buffer , pointing to the given ` root_table ` .
