[checkstyle] (modifier) InterfaceMemberImpliedModifier
diff --git a/src/main/java/org/apache/sling/commons/clam/ClamService.java b/src/main/java/org/apache/sling/commons/clam/ClamService.java
index 11eeb3b..d223d2a 100644
--- a/src/main/java/org/apache/sling/commons/clam/ClamService.java
+++ b/src/main/java/org/apache/sling/commons/clam/ClamService.java
@@ -37,6 +37,6 @@
* @return The scan result from Clam
* @throws IOException if scanning data or parsing reply fails
*/
- @NotNull ScanResult scan(@NotNull final InputStream data) throws IOException;
+ public abstract @NotNull ScanResult scan(@NotNull final InputStream data) throws IOException;
}