Bug - ParsedReverseNested should implements ReversNested but not Nested interface

[miiit]

Elasticsearch version (bin/elasticsearch --version):
6.4.2
Plugins installed: []

JVM version (java -version):
1.8.131
OS version (uname -a if on a Unix-like system):
Opensuse 15

Description of the problem including expected versus actual behavior:
ParsedReverseNested should implements ReversNested but not Nested interface.

Steps to reproduce:

Please include a minimal but complete recreation of the problem, including
(e.g.) index creation, mappings, settings, query etc. The easier you make for
us to reproduce it, the more likely that somebody will take the time to look at it.

1. Open IDE
2. Look at the class org.elasticsearch.search.aggregations.bucket.nested.ParsedReverseNested
3. Check interface (Currently the class implements Nested interface)

Provide logs (if relevant):

[elasticmachine]

Pinging @elastic/es-search-aggs

[cbuescher]

Thanks @miiit, this is indeed confusing, it should be ReversNested. I will open a PR with a correction shortly.