code: public void seek(int pos, int ref) throws SQLException {
      FastpathArg[] args = new FastpathArg[3];
      args[0] = new FastpathArg(fd);
      args[1] = new FastpathArg(pos);
      args[2] = new FastpathArg(ref);
      fp.fastpath("lo_lseek", args);
    }
docs: <p>Sets the current position within the object.</p>
  
  <p>This is similar to the fseek() call in the standard C library. It allows you to have random
  access to the large object.</p>
  
  @param pos position within object
  @param ref Either SEEK_SET, SEEK_CUR or SEEK_END
  @throws SQLException if a database-access error occurs.