code: public <T> T findUnique(@NotNull RowMapper<T> mapper, @NotNull @SQL String sql, Object... args) {
          return findUnique(mapper, SqlQuery.query(sql, args));
      }
docs: Finds a unique result from database, using given {@link RowMapper} to convert the row.
  
  @throws NonUniqueResultException if there is more then one row
  @throws EmptyResultException if there are no rows