@Override
    public void describeTo(Description description) {
      description.appendText("Attributes containing [").appendDescriptionOf(keyMatcher)
        .appendText("->").appendDescriptionOf(valueMatcher).appendText("]");
    }
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