Julie Tibshirani f971146de4
Rename FieldValueRetriever -> FieldFetcher. (#62795) (#62836)
The name `FieldFetcher` fits better with the 'fetch' terminology we use
elsewhere, for example `FetchFieldsPhase` and `ValueFetcher`.

This PR also moves the construction of the fetcher off the context and onto
`FetchFieldsPhase`, which feels like a more natural place for it, and fixes a
TODO in javadocs.
2020-09-23 10:12:23 -07:00
..