add supression for must be closed
@@ -1003,6 +1003,7 @@ public final class HttpRequest {
// execute
lowLevelHttpRequest.setTimeout(connectTimeout, readTimeout);
// switch tracing scope to current span
+ @SuppressWarnings("MustBeClosedChecker")
Scope ws = tracer.withSpan(span);
OpenCensusUtils.recordSentMessageEvent(
span, sentIdGenerator++, lowLevelHttpRequest.getContentLength());
