code: private StorageUri getIndividualMessageAddress(final String messageId, final OperationContext opContext)
              throws URISyntaxException, StorageException {
          return PathUtility.appendPathToUri(this.getMessageRequestAddress(opContext), messageId);
      }
docs: Get a single message request (Used internally only).
  
  @return The <code>URI</code> for a single message request.
  
  @throws URISyntaxException
  If the resource URI is invalid.
  @throws StorageException