code: public List< T> getAllBySql(String fullSql, Integer offset, Integer limit) {
  		return getAllBySql(fullSql, null, null, offset, limit);
  	}
docs: Get all by SQL with specific offset and limit
  @param fullSql
  @param offset		the number of first record in the whole query result to be returned, records numbers start from 0
  @param limit			the maximum number of records to return
  @return the query result