toHexString       404 third_party/protobuf/java/src/test/java/com/google/protobuf/IsValidUtf8TestUtil.java   private static String toHexString(byte[] b) {
toHexString       408 third_party/protobuf/java/src/test/java/com/google/protobuf/IsValidUtf8TestUtil.java   private static String toHexString(byte[] b, int len) {