public static Builder newBuilder() {
    return new Builder();
  }
@Test void localServiceNamePreservesCase() {
    String expectedLocalServiceName = "FavStar";
    Tracing.Builder builder = Tracing.newBuilder().localServiceName(expectedLocalServiceName);
    assertThat(builder).extracting("defaultSpan.localServiceName")
      .isEqualTo(expectedLocalServiceName);
  }