System.Linq.Expressions.Error.ExpressionTypeNotInvocable C# (CSharp) Метод

        internal static Exception ExpressionTypeNotInvocable(object p0, string paramName)
        {
            return new ArgumentException(Strings.ExpressionTypeNotInvocable(p0), paramName);
        }
        /// <summary>

        //CONFORMING
        public static InvocationExpression Invoke(Expression expression, IEnumerable <Expression> arguments)
        {
            RequiresCanRead(expression, "expression");

            Type delegateType = expression.Type;

            if (delegateType == typeof(Delegate))
            {
                throw Error.ExpressionTypeNotInvocable(delegateType);
            }
            else if (!typeof(Delegate).IsAssignableFrom(expression.Type))
            {
                Type exprType = TypeUtils.FindGenericType(typeof(Expression <>), expression.Type);
                if (exprType == null)
                {
                    throw Error.ExpressionTypeNotInvocable(expression.Type);
                }
                delegateType = exprType.GetGenericArguments()[0];
            }

            var mi   = delegateType.GetMethod("Invoke");
            var args = arguments.ToReadOnly();

            ValidateArgumentTypes(mi, ExpressionType.Invoke, ref args);
            return(new InvocationExpression(expression, args, mi.ReturnType));
        }