Fixes https://github.com/spring-projects/spring-integration/issues/2478 The `Files.walk()` stream must be closed in the end after usage * Wrap `Files.walk()` to the `try-with-resources` **Cherry-pick to 5.0.x**
Fixes https://github.com/spring-projects/spring-integration/issues/2478 The `Files.walk()` stream must be closed in the end after usage * Wrap `Files.walk()` to the `try-with-resources` **Cherry-pick to 5.0.x**