code: public String toDecryptedString(String providerName) throws Exception {
          Map<String,Object> mapData = this.toDecryptedMap(providerName);
          return JacksonTransformers.MAPPER.writeValueAsString(JsonObject.from(mapData));
      }
docs: Converts the {@link JsonObject} into its decrypted JSON string representation.
  
  Note: Use of the Field Level Encryption functionality provided in the
  com.couchbase.client.encryption namespace provided by Couchbase is
  subject to the Couchbase Inc. Enterprise Subscription License Agreement
  at https://www.couchbase.com/ESLA-11132015.
  
  @return the decrypted JSON string representing this {@link JsonObject}.