public SortedSet<Sdk> getSupportedSdks() {
    return supportedSdks;
  }
@Test
  public void getSupportedSdks_shouldReturnOnlySupported() throws Exception {
    assertThat(sdkCollection.getSupportedSdks())
        .containsExactly(fakeSdk1234, fakeSdk1235, fakeSdk1236)
        .inOrder();
  }