@Test
public void testGet() {

    assertThat(newSample()).satisfies(o -> {
        assertThat(o.getParams()).hasSize(3);
        assertThat(o.get(K1)).isEqualTo(V1);
        assertThat(o.get(K2)).isEqualTo(V2);
        assertThat(o.get(K3)).isEqualTo(V3);
        assertThat(o.get("hello")).isNull();
    });
}