[407028] Looking at all inverse references when computing isAttribute.
diff --git a/plugins/org.eclipse.uml2.uml/src/org/eclipse/uml2/uml/internal/operations/PropertyOperations.java b/plugins/org.eclipse.uml2.uml/src/org/eclipse/uml2/uml/internal/operations/PropertyOperations.java
index 940fe24..5df1b1c 100644
--- a/plugins/org.eclipse.uml2.uml/src/org/eclipse/uml2/uml/internal/operations/PropertyOperations.java
+++ b/plugins/org.eclipse.uml2.uml/src/org/eclipse/uml2/uml/internal/operations/PropertyOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2011 IBM Corporation, CEA, and others.
+ * Copyright (c) 2005, 2013 IBM Corporation, CEA, and others.
  * All rights reserved.   This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -8,7 +8,7 @@
  * Contributors:
  *   IBM - initial API and implementation
  *   Kenn Hussey - 323181
- *   Kenn Hussey (CEA) - 327039, 351774
+ *   Kenn Hussey (CEA) - 327039, 351774, 407028
  *
  */
 package org.eclipse.uml2.uml.internal.operations;
@@ -478,8 +478,8 @@
 	 */
 	public static boolean isAttribute(Property property, Property p) {
 
-		for (EStructuralFeature.Setting nonNavigableInverseReference : getNonNavigableInverseReferences(p)) {
-			EObject eObject = nonNavigableInverseReference.getEObject();
+		for (EStructuralFeature.Setting inverseReference : getInverseReferences(p)) {
+			EObject eObject = inverseReference.getEObject();
 
 			if (eObject instanceof Classifier
 				&& ((Classifier) eObject).getAttributes().contains(p)) {
diff --git a/tests/org.eclipse.uml2.uml.tests/src/org/eclipse/uml2/uml/tests/PropertyTest.java b/tests/org.eclipse.uml2.uml.tests/src/org/eclipse/uml2/uml/tests/PropertyTest.java
index 50aa499..bb65a44 100644
--- a/tests/org.eclipse.uml2.uml.tests/src/org/eclipse/uml2/uml/tests/PropertyTest.java
+++ b/tests/org.eclipse.uml2.uml.tests/src/org/eclipse/uml2/uml/tests/PropertyTest.java
@@ -8,7 +8,7 @@
  * Contributors:
  *   IBM - initial API and implementation
  *   Kenn Hussey - 323181
- *   Kenn Hussey (CEA) - 327039, 351774, 212765
+ *   Kenn Hussey (CEA) - 327039, 351774, 212765, 407028
  *
  */
 package org.eclipse.uml2.uml.tests;
@@ -601,11 +601,19 @@
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see org.eclipse.uml2.uml.Property#isAttribute(org.eclipse.uml2.uml.Property)
-	 * @generated
+	 * @generated NOT
 	 */
 	public void testIsAttribute__Property() {
-		// TODO: implement this feature getter test method
-		// Ensure that you remove @generated or mark it @generated NOT
+		assertFalse(getFixture().isAttribute(getFixture()));
+
+		org.eclipse.uml2.uml.Class class_ = UMLFactory.eINSTANCE.createClass();
+		class_.getOwnedAttributes().add(getFixture());
+
+		assertTrue(getFixture().isAttribute(getFixture()));
+
+		class_.getOwnedAttributes().remove(getFixture());
+
+		assertFalse(getFixture().isAttribute(getFixture()));
 	}
 
 	/**