Microsoft.CodeAnalysis.Simplification.AbstractSimplificationService<TCompilationUnitSyntax, TExpressionSyntax, TStatementSyntax, TCrefSyntax>.Expand(Microsoft.CodeAnalysis.SyntaxToken, Microsoft.CodeAnalysis.SemanticModel, System.Func<Microsoft.CodeAnalysis.SyntaxNode, System.Boolean>, System.Threading.CancellationToken)