public static SqlDecimal of(final int precision, final int scale) {
    return new SqlDecimal(precision, scale);
  }
@SuppressWarnings("UnstableApiUsage")
  @Test
  public void shouldImplementHashCodeAndEqualsProperly() {
    new EqualsTester()
        .addEqualityGroup(SqlDecimal.of(10, 2), SqlDecimal.of(10, 2))
        .addEqualityGroup(SqlDecimal.of(11, 2))
        .addEqualityGroup(SqlDecimal.of(10, 3))
        .testEquals();
  }