D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(180,44): warning CS8604: Possible null reference argument for parameter 'source' in 'void PinyinSearcher<T>.Search(string query, ConcurrentBag<SearchResults<T>> results, T source)'. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(180,44): warning CS8600: Converting null literal or possible null value to non-nullable type. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(180,47): warning CS8602: Dereference of a possibly null reference. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(82,37): warning CS8602: Dereference of a possibly null reference. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(62,57): warning CS8602: Dereference of a possibly null reference. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(127,38): warning CS8604: Possible null reference argument for parameter 'source' in 'int Enumerable.Count<List<string>>(IEnumerable<List<string>> source)'. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(34,21): warning CS8602: Dereference of a possibly null reference. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(34,21): warning CS8602: Dereference of a possibly null reference. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(20,12): warning CS8618: Non-nullable property 'Source' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]

D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\PinyinSearcher.cs(12,12): warning CS8618: Non-nullable property 'SourceDictionary' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [D:\a\Kitopia\Kitopia\PinyinM.NET\Pinyin.NET\Pinyin.NET.csproj::TargetFramework=net6.0]