func reflect.SliceOf

3 uses

	reflect (current package)
		type.go#L2350: func SliceOf(t Type) Type {
		type.go#L2943: 	array.slice = SliceOf(elem).(*rtype)

	google.golang.org/protobuf/internal/filetype
		build.go#L230: 			goType = reflect.SliceOf(goType)