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Take into account some sonarqube feedbacks
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kmelia/kmelia-library/src/main/java/org/silverpeas/components/kmelia/notification/KmeliaDocumentSubscriptionPublicationUserNotification.java

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@@ -35,6 +35,7 @@
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import org.silverpeas.core.util.file.FileRepositoryManager;
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import java.util.Collection;
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import java.util.Collections;
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import static org.silverpeas.core.util.StringUtil.isDefined;
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@@ -65,7 +66,7 @@ protected String getTemplateFileName() {
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@Override
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protected Collection<String> getUserIdsToNotify() {
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// Users to notify are not handled here.
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return null;
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return Collections.emptyList();
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}
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@Override

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