public int getPrecision() {
    return precision;
  }
@Test
  public void default_precision_is_38() {
    DecimalColumnDef def = new DecimalColumnDef.Builder()
      .setColumnName("issues")
      .setScale(20)
      .setIsNullable(true)
      .build();

    assertThat(def.getPrecision()).isEqualTo(38);
  }