IronRuby.Builtins.RubyClass.InvalidateGroupsInSubClasses C# (CSharp) Method

        internal int InvalidateGroupsInSubClasses(string/*!*/ methodName, int maxLevel) {
            // don't recurse below maxLevel:
            if (_level > maxLevel) {
                return -1;
            }

            RubyMemberInfo method;
            if (TryGetDefinedMethod(methodName, out method)) {
                var group = method as RubyOverloadGroupInfo;
                if (group != null) {
                    // version of the class has already been increased:
                    RemoveMethodNoCacheInvalidation(methodName);
                    return Math.Max(_level, InvalidateGroupsInDependentClasses(methodName, maxLevel));
                } else {
                    // don't recurse here: the new method overrides a non-group
                    return -1;
                }
            } else {
                return InvalidateGroupsInDependentClasses(methodName, maxLevel);
            }
        }