OAK-11399: Remove usage of Guava io.BaseEncoding

Author: reschke

oak-blob/src/main/java/org/apache/jackrabbit/oak/spi/blob/AbstractBlobStore.java

@@ -244,7 +244,7 @@ public String getReference(@NotNull String blobId) {
             Mac mac = Mac.getInstance(ALGORITHM);
             mac.init(new SecretKeySpec(getReferenceKey(), ALGORITHM));
             byte[] hash = mac.doFinal(blobId.getBytes("UTF-8"));
-            return ':' + BASE32ENCODER.encodeToString(hash);
+            return blobId + ':' + BASE32ENCODER.encodeToString(hash);
         } catch (NoSuchAlgorithmException e) {
             throw new IllegalStateException(e);
         } catch (InvalidKeyException e) {