public void Return <TKey, TValue>(IEnumerable <Dictionary <TKey, TValue> > items)
 => DictionaryConcurrentPool <TKey, TValue> .Return(items);
 public void Return <TKey, TValue>(Dictionary <TKey, TValue> item)
 => DictionaryConcurrentPool <TKey, TValue> .Return(item);
 public void Return <TKey, TValue>(params Dictionary <TKey, TValue>[] items)
 => DictionaryConcurrentPool <TKey, TValue> .Return(items);
 public Dictionary <TKey, TValue> Dictionary <TKey, TValue>()
 => DictionaryConcurrentPool <TKey, TValue> .Get();