rshamunov commented on code in PR #26933:
URL: https://github.com/apache/beam/pull/26933#discussion_r1221850843
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website/www/site/content/en/documentation/transforms/java/aggregation/groupbykey.md:
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@@ -36,10 +36,10 @@ windowing or triggering is necessary when processing
unbounded collections.
See more information in the [Beam Programming
Guide](/documentation/programming-guide/#groupbykey).
## Examples
-**Example 1**: (a, 1), (b, 2), (a, 3) will result into (a, [1, 3]), (b, [2]).
-**Example 2**: Given a collection of customer orders keyed by postal code,
-you could use `GroupByKey` to get the collection of all orders in each postal
code.
+{{< playground height="700px" >}}
Review Comment:
Example 1:
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