Microsoft.CodeAnalysis.BraceMatching.AbstractDirectiveTriviaBraceMatcher<TDirectiveTriviaSyntax, TIfDirectiveTriviaSyntax, TElseIfDirectiveTriviaSyntax, TElseDirectiveTriviaSyntax, TEndIfDirectiveTriviaSyntax, TRegionDirectiveTriviaSyntax, TEndRegionDirectiveTriviaSyntax>.GetMatchingDirective(TDirectiveTriviaSyntax, System.Threading.CancellationToken)