public byte[] getByteArray(Integer id, Integer type)
   {
      return (getByteArray(m_meta.getOffset(id, type)));
   }
public byte [ ] getByteArray ( Integer id , Integer type ) { return ( getByteArray ( m_meta . getOffset ( id , type ) ) ) ; }
This method retrieves a byte array of the specified type,
belonging to the item with the specified unique ID.

@param id unique ID of entity to which this data belongs
@param type data type identifier
@return byte array containing required data