code: protected void verifyPropertyPresence(String propertyName) {
          if (!commandResult.containsKey(propertyName)) {
              throw new IllegalStateException(
                      String.format("There is no '%s' attribute in the resulting command output %s. "
                              + "Did you set the options properly?", propertyName, commandResult));
          }
      }
docs: Verifies if the corresponding property is present in the commend result
  and throws an exception if not.
  
  @param propertyName the actual property name to be verified for presence