docs: static ClassInfo getOrCreateClassInfo(final String className, final int classModifiers,
              final Map<String, ClassInfo> classNameToClassInfo) {
          ClassInfo classInfo = classNameToClassInfo.get(className);
          if (classInfo == null) {
              classNameToClassInfo.put(className,
                      classInfo = new ClassInfo(className, classModifiers, /* classfileResource = */ null));
          }
          classInfo.setModifiers(classModifiers);
          return classInfo;
      }