private static SyntaxNode?Unwrap(ISyntaxFacts syntaxFacts, SyntaxNode node)
        {
            node = syntaxFacts.WalkDownParentheses(node);

            if (node is TInvocationExpression invocation)
            {
                return(syntaxFacts.GetExpressionOfInvocationExpression(invocation));
            }

            if (node is TMemberAccessExpression memberAccess)
            {
                return(syntaxFacts.GetExpressionOfMemberAccessExpression(memberAccess));
            }

            if (node is TConditionalAccessExpression conditionalAccess)
            {
                return(syntaxFacts.GetExpressionOfConditionalAccessExpression(conditionalAccess));
            }

            if (node is TElementAccessExpression elementAccess)
            {
                return(syntaxFacts.GetExpressionOfElementAccessExpression(elementAccess));
            }

            return(null);
        }
        private static TExpressionSyntax?Unwrap(ISyntaxFacts syntaxFacts, TExpressionSyntax node)
        {
            node = (TExpressionSyntax)syntaxFacts.WalkDownParentheses(node);

            if (node is TInvocationExpressionSyntax invocation)
            {
                return((TExpressionSyntax)syntaxFacts.GetExpressionOfInvocationExpression(invocation));
            }

            if (syntaxFacts.IsSimpleMemberAccessExpression(node))
            {
                return((TExpressionSyntax?)syntaxFacts.GetExpressionOfMemberAccessExpression(node));
            }

            if (node is TConditionalAccessExpressionSyntax conditionalAccess)
            {
                return((TExpressionSyntax)syntaxFacts.GetExpressionOfConditionalAccessExpression(conditionalAccess));
            }

            if (node is TElementAccessExpressionSyntax elementAccess)
            {
                return((TExpressionSyntax?)syntaxFacts.GetExpressionOfElementAccessExpression(elementAccess));
            }

            return(null);
        }