public KsqlTarget target(final URI server) {
    return target(server, Collections.emptyMap());
  }
@Test
  public void shouldOverrideAuthHeader() {

    // Given:
    setupExpectedResponse();

    // When:
    KsqlTarget target = ksqlClient.target(serverUri).authorizationHeader("other auth");
    target.postKsqlRequest("some ksql", Collections.emptyMap(), Optional.of(123L));

    // Then:
    assertThat(server.getHeaders().get("Authorization"), is("other auth"));
  }