diff --git a/src/main/java/org/springframework/samples/petclinic/ExperimentsForPullRequests.java b/src/main/java/org/springframework/samples/petclinic/ExperimentsForPullRequests.java
new file mode 100644
index 000000000..90e5f0e4a
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/ExperimentsForPullRequests.java
@@ -0,0 +1,11 @@
+package org.springframework.samples.petclinic;
+
+import org.springframework.lang.Nullable;
+
+public class ExperimentsForPullRequests {
+
+	public static void foo(@Nullable String s){
+		System.out.println("String length: " + s.length());
+	}
+
+}