Github user metatype commented on a diff in the pull request: https://github.com/apache/geode/pull/321#discussion_r93149349 --- Diff: geode-core/src/main/java/org/apache/geode/cache/execute/Execution.java --- @@ -89,7 +89,7 @@ * * @since GemFire 6.0 */ - public ResultCollector<?, ?> execute(String functionId) throws FunctionException; + public <T, S> ResultCollector<T, S> execute(String functionId) throws FunctionException; --- End diff -- Since this is a public API, you should describe the params in javadoc when it's not obvious what T and S refer to. You can use the `@param` tag as seen in [1]. [1] https://github.com/apache/geode/blob/8bf39571471642beaaa36c9626a61a90bd3803c2/geode-core/src/main/java/org/apache/geode/cache/snapshot/RegionSnapshotService.java
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