Add small note in a comment about format version
am: 4faba98c77

Change-Id: I6809c97dd5cb57e5ba31f963215a4508eb25e753
diff --git a/testing/src/main/java/libcore/timezone/testing/ZoneInfoTestHelper.java b/testing/src/main/java/libcore/timezone/testing/ZoneInfoTestHelper.java
index bdfd707..f69556a 100644
--- a/testing/src/main/java/libcore/timezone/testing/ZoneInfoTestHelper.java
+++ b/testing/src/main/java/libcore/timezone/testing/ZoneInfoTestHelper.java
@@ -31,7 +31,8 @@
     private ZoneInfoTestHelper() {}
 
     /**
-     * Constructs valid and invalid zic data for tests.
+     * Constructs valid and invalid zic data for tests. Currently it only creates minimal TZif
+     * version 1 data necessary to be compatible with Android's ZoneInfo class.
      */
     public static class ZicDataBuilder {