diff --git a/test-base/api/lint-baseline.txt b/test-base/api/lint-baseline.txt
new file mode 100644
index 0000000..86c8a91
--- /dev/null
+++ b/test-base/api/lint-baseline.txt
@@ -0,0 +1,3 @@
+// Baseline format: 1.0
+MissingNullability: junit.framework.ComparisonFailure#getMessage():
+    Missing nullability on method `getMessage` return