Microsoft.CodeAnalysis.Shared.Utilities.AbstractSpeculationAnalyzer<TExpressionSyntax, TTypeSyntax, TAttributeSyntax, TArgumentSyntax, TForEachStatementSyntax, TThrowStatementSyntax, TInvocationExpressionSyntax, TConversion>.GetForEachStatementExpression(TForEachStatementSyntax)