public MsalAccountCacheItem GetAccount(MsalAccountCacheKey accountKey)
{
string partitionKey = CacheKeyFactory.GetKeyFromAccount(accountKey);
AccountCacheDictionary.TryGetValue(partitionKey, out var partition);
MsalAccountCacheItem cacheItem = null;
partition?.TryGetValue(accountKey.ToString(), out cacheItem);
return(cacheItem);
}