public final void setStrictness(Strictness strictness) {
    Objects.requireNonNull(strictness);
    this.strictness = strictness;
  }
@Test
  public void testSetStrictness() {
    JsonReader reader = new JsonReader(reader("{}"));
    reader.setStrictness(Strictness.STRICT);
    assertThat(reader.getStrictness()).isEqualTo(Strictness.STRICT);
  }