diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/ITraceGenerator.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/ITraceGenerator.java
index a39f372..27c8c28 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/ITraceGenerator.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/ITraceGenerator.java
@@ -48,4 +48,7 @@
 			CtMethod m, String blockId, String incomings, 
 			String threadId, String lineNum, String timeStamp);
 
+	public abstract String generateInsertBeforeStatementsForClassDefinition(
+			String className, String classPath, String loaderPath);
+
 }