diff --git a/TracerOnJavassist/src/test/A.java b/TracerOnJavassist/src/test/A.java
new file mode 100644
index 0000000..5373aab
--- /dev/null
+++ b/TracerOnJavassist/src/test/A.java
@@ -0,0 +1,5 @@
+package test;
+
+public abstract class A {
+	public abstract A m(A a);
+}