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diff --git a/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/monitoring/ServiceReferenceNode.java b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/monitoring/ServiceReferenceNode.java
new file mode 100644
index 0000000..1c60811
--- /dev/null
+++ b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/monitoring/ServiceReferenceNode.java
@@ -0,0 +1,46 @@
+package org.argeo.cms.e4.monitoring;
+
+import org.argeo.cms.ux.widgets.TreeParent;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.ServiceReference;
+
+/** A tree element representing a {@link ServiceReference} */
+@SuppressWarnings({ "rawtypes" })
+class ServiceReferenceNode extends TreeParent {
+	private final ServiceReference serviceReference;
+	private final boolean published;
+
+	public ServiceReferenceNode(ServiceReference serviceReference,
+			boolean published) {
+		super(serviceReference.toString());
+		this.serviceReference = serviceReference;
+		this.published = published;
+
+		if (isPublished()) {
+			Bundle[] usedBundles = serviceReference.getUsingBundles();
+			if (usedBundles != null) {
+				for (Bundle b : usedBundles) {
+					if (b != null)
+						addChild(new BundleNode(b));
+				}
+			}
+		} else {
+			Bundle provider = serviceReference.getBundle();
+			addChild(new BundleNode(provider));
+		}
+
+		for (String key : serviceReference.getPropertyKeys()) {
+			addChild(new TreeParent(key + "="
+					+ serviceReference.getProperty(key)));
+		}
+
+	}
+
+	public ServiceReference getServiceReference() {
+		return serviceReference;
+	}
+
+	public boolean isPublished() {
+		return published;
+	}
+}