@Override
  @CheckForNull
  public ScannerReport.Changesets readChangesets(int componentRef) {
    ensureInitialized();
    return delegate.readChangesets(componentRef);
  }
@Test
  public void readChangesets_returns_null_if_no_changeset() {
    assertThat(underTest.readChangesets(COMPONENT_REF)).isNull();
  }