System.Linq.Expressions.MethodCallExpression.GetArgument C# (CSharp) Method

        public virtual Expression GetArgument(int index)
        {
            throw ContractUtils.Unreachable;
        }

        protected internal override Expression VisitMethodCall(MethodCallExpression node)
        {
            int        start = 0;
            Expression ob    = node.Object;

            if (node.Method.GetCustomAttribute(typeof(ExtensionAttribute)) != null)
            {
                start = 1;
                ob    = node.GetArgument(0);
            }

            if (ob != null)
            {
                Visit(ob);
                Out('.');
            }
            Out(node.Method.Name);
            Out('(');
            for (int i = start, n = node.ArgumentCount; i < n; i++)
            {
                if (i > start)
                {
                    Out(", ");
                }
                Visit(node.GetArgument(i));
            }
            Out(')');
            return(node);
        }