Bug 570914 - use fixed API

Change-Id: I85336254cb4aac562fdd132817a0ab6615abdc88
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/org.eclipse.text.quicksearch.tests/src/org/eclipse/text/quicksearch/tests/MockResource.java b/org.eclipse.text.quicksearch.tests/src/org/eclipse/text/quicksearch/tests/MockResource.java
index ceb8160..cf31a8e 100644
--- a/org.eclipse.text.quicksearch.tests/src/org/eclipse/text/quicksearch/tests/MockResource.java
+++ b/org.eclipse.text.quicksearch.tests/src/org/eclipse/text/quicksearch/tests/MockResource.java
@@ -448,7 +448,8 @@
 		throw new Error("Not implemented");
 	}
 
-	public IMarker createMarker(String type, Map<String, Object> attributes) throws CoreException {
+	@Override
+	public IMarker createMarker(String type, Map<String, ? extends Object> attributes) throws CoreException {
 		// TODO Auto-generated method stub
 		return null;
 	}