We make some modifications to the internal Google checkstyle file because Google's linter uses a modified build of Checkstyle that introduces some new classes and allows for more specific checks than the open-source Checkstyle (e.g. only enforcing UPPER_SNAKE_CASE on deeply immutable fields). There exists a public Checkstyle file that purports to be the Google java format file (https://github.com/checkstyle/checkstyle/blob/master/src/main/resources/google_checks.xml) but it doesn't quite match up with what the internal linter says in certain situations (e.g. what operators must/can appear on new lines).
The suppressions are basically "don't run on generated code + don't care about Javadoc in test code"
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=231283700
