code: public Section addSection(SoftwareSystem softwareSystem, String title, Format format, String content) {
          return add(softwareSystem, title, format, content);
      }
docs: Adds a section relating to a {@link SoftwareSystem}.
  
  @param softwareSystem    the {@link SoftwareSystem} the documentation content relates to
  @param title             the section title
  @param format            the {@link Format} of the documentation content
  @param content           a String containing the documentation content
  @return                  a documentation {@link Section}