[558304] Improve readability

Bug: 558304
Change-Id: I6ed5ac3c90dc217307eed722d05c93fb90ee67ee
Signed-off-by: Maxime Porhel <maxime.porhel@obeo.fr>
diff --git a/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/internal/session/danalysis/DAnalysisSessionServicesImpl.java b/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/internal/session/danalysis/DAnalysisSessionServicesImpl.java
index 7de7185..382931e 100644
--- a/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/internal/session/danalysis/DAnalysisSessionServicesImpl.java
+++ b/plugins/org.eclipse.sirius/src/org/eclipse/sirius/business/internal/session/danalysis/DAnalysisSessionServicesImpl.java
@@ -194,11 +194,10 @@
             }
         } else {
             // getting all srm from aird to add them to allResources
-            for (Resource resource : resources) {
+            resources.stream().findFirst().ifPresent(resource -> {
                 List<Resource> srms = resource.getResourceSet().getResources().stream().filter(res -> new ResourceQuery(res).isSrmResource()).collect(Collectors.toList());
                 allResources.addAll(srms);
-                break;
-            }
+            });
             allResources.addAll(session.getAllSessionResources());
         }
         for (final Resource res : allResources) {