Entitas.Context.ClearGroups C# (CSharp) Method

        public void ClearGroups()
        {
            foreach(var group in _groups.Values) {
                group.RemoveAllEventHandlers();
                var entities = group.GetEntities();
                for (int i = 0; i < entities.Length; i++) {
                    entities[i].Release(group);
                }

                if(OnGroupCleared != null) {
                    OnGroupCleared(this, group);
                }
            }
            _groups.Clear();

            for (int i = 0; i < _groupsForIndex.Length; i++) {
                _groupsForIndex[i] = null;
            }
        }