raboof commented on code in PR #1614:
URL: https://github.com/apache/pekko/pull/1614#discussion_r1894882862
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docs/src/main/paradox/stream/operators/Sink/none.md:
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@@ -0,0 +1,47 @@
+# Sink.none
+
+A `Sink` that will test the given predicate `p` for every received element and
completes with the result.
+
+@ref[Sink operators](../index.md#sink-operators)
+
+## Signature
+
+@apidoc[Sink.none](Sink$) {
scala="#none[T](p:T=%3EBoolean):org.apache.pekko.stream.scaladsl.Sink[T,scala.concurrent.Future[Boolean]]"
java="#none(org.apache.pekko.japi.function.Predicate)" }
+
+## Description
+none operator applies a predicate function to assert each element received, it
returns false if any element satisfy the assertion, otherwise it returns true.
+
+It materializes into a `Future` (in Scala) or a `CompletionStage` (in Java)
that completes with the last state when the stream has finished.
+
+Notes that if source is empty, it will return true
+
+A `Sink` that will test the given predicate `p` for every received element and
+
+ - completes and returns @scala[`Future`] @java[`CompletionStage`] of `true`
if the predicate is false for all elements;
+ - completes and returns @scala[`Future`] @java[`CompletionStage`] of `true`
if the stream is empty (i.e. completes before signalling any elements);
+ - completes and returns @scala[`Future`] @java[`CompletionStage`] of `false`
if the predicate is true for any element.
+
+The materialized value @scala[`Future`] @java[`CompletionStage`] will be
completed with the value `true` or `false`
+when the input stream ends, or completed with `Failure` if there is a failure
signaled in the stream.
+
+## Example
+
+This example tests all elements in the stream is `<=` 100.
+
+Scala
+: @@snip
[ForAll.scala](/docs/src/test/scala/docs/stream/operators/sink/NoneMatch.scala)
{ #none }
+
+Java
+: @@snip
[ForAll.java](/docs/src/test/java/jdocs/stream/operators/sink/NoneMatch.java) {
#none }
Review Comment:
```suggestion
: @@snip
[NoneMatch.scala](/docs/src/test/scala/docs/stream/operators/sink/NoneMatch.scala)
{ #none }
Java
: @@snip
[NoneMatch.java](/docs/src/test/java/jdocs/stream/operators/sink/NoneMatch.java)
{ #none }
```
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