2 references to AddIfMissing
Microsoft.CodeAnalysis.Features (2)
EmbeddedLanguages\RegularExpressions\LanguageServices\EmbeddedCompletionContext.cs (1)
61AddIfMissing(new RegexItem(
EmbeddedLanguages\RegularExpressions\LanguageServices\RegexEmbeddedCompletionProvider.cs (1)
285context.AddIfMissing(new RegexItem(