golang a 代码
文件路径：/test/typeparam/issue49893.dir/a.go
/ Copyright 2021 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package a
type Option[T any] interface {
ToSeq() Seq[T]
}
type Seq[T any] []T
func (r Seq[T]) Find(p func(v T) bool) Option[T] {
panic("")
}