code: public List<String> getPropertyValueAsList(String propertyName) {
          String[] propertyNames = new String[1];
          propertyNames[0] = propertyName;
  
          return getPropertyValueAsList(propertyNames);
      }
docs: Searches over the group of {@code GUIProperties} for a property list
  corresponding to the given name.
  
  @param propertyName
  property name to be found
  @return the first property list found associated with a concatenation of
  the given names
  @throws MissingGUIPropertyException