Syntax error of go language generic in IDE

Problem description

Use goland Use generics ,go Version is ：
go version go1.18.1 windows/amd64
Write code ：

func Test[T any](a, b T) T {
	return a
}

func Add[T string | int | int64 | float64](a, b T) T {
	return a + b
}

func main() {
	fmt.Println("hello")
	res := Test(1.1, 2.2)
	fmt.Println(res)
}

There are the following problems ：
#command-line-arguments
.\demo02.go:5:17: syntax error: unexpected type, expecting ]

resolvent

This is because goland Generic format not supported ： Some versions can be extended with external tools ：
The official website tutorial is as follows
https://blog.jetbrains.com/go/2020/11/24/experimenting-with-go-type-parameters-generics-in-goland/
It is recommended to update directly to 2022 Later versions