internal override bool IsInsertionTrigger(SourceText text, int characterPosition, OptionSet options)
 {
     return(CompletionUtilities.IsTriggerCharacter(text, characterPosition, options));
 }
 internal override bool IsInsertionTrigger(SourceText text, int characterPosition, OptionSet options)
 => CompletionUtilities.IsTriggerCharacter(text, characterPosition, options) || text[characterPosition] == ' ';