AppEngineSpanContextHandle implements SpanContextHandle { Span getSpan() { return span; } AppEngineSpanContextHandle(Span span); @Override SpanContext getCurrentSpanContext(); @Override void detach();  }
@Test public void getSpan() { AppEngineSpanContextHandle handle = new AppEngineSpanContextHandle(mockSpan); Span span = handle.getSpan(); assertThat(span).isSameAs(mockSpan); }