code: @Override
      public void verify() throws SniffyAssertionError {
          checkOpened();
          SniffyAssertionError assertionError = getSniffyAssertionError();
          if (null != assertionError) {
              throw assertionError;
          }
      }
docs: Verifies all expectations added previously using {@code expect} methods family
  @throws SniffyAssertionError if wrong number of queries was executed
  @since 2.0