@Override
    public void describeMismatchSafely(Attributes item, Description mismatchDescription) {
      mismatchDescription.appendText("Attributes was ").appendValueList("[", ", ", "]",
        item.asMap().entrySet());
    }
Helper methods for matching against instances of {@link io.opentelemetry.api.common.Attributes}.
hbase-client/src/test/java/org/apache/hadoop/hbase/client/trace/hamcrest/AttributesMatchers.java