Julie Tibshirani ae2fc4118d Add factory methods for common value fetchers. (#63438) ... This PR adds factory methods for the most common implementations: * `SourceValueFetcher.identity` to pass through the source value untouched. * `SourceValueFetcher.toString` to simply convert the source value to a string.		2020-10-08 12:14:53 -07:00
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src	Add factory methods for common value fetchers. (#63438)	2020-10-08 12:14:53 -07:00
build.gradle	Migrate some more mapper test cases (#61507) (#61552)	2020-08-25 15:27:26 -04:00