code: @Override
      public HasInputStream readResource(Path path, ResourceMetaBuilder resourceMetaBuilder, final HasInputStream
              hasResourceStream) {
          if (wasEncoded(resourceMetaBuilder)) {
              return decode(hasResourceStream);
          }
          //return null to indicate no change was performed on the data
          return null;
      }
docs: Reads stored data, so decodes a base64 stream if the metadata indicates it has been encoded
  
  @param path
  @param resourceMetaBuilder
  @param hasResourceStream
  
  @return