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go/test/fixedbugs/issue49143.dir/a.go

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// 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
import "sync"
type Loader[K comparable, R any] struct {
batch *LoaderBatch[K, R]
}
func (l *Loader[K, R]) Load() error {
l.batch.f()
return nil
}
type LoaderBatch[K comparable, R any] struct {
once *sync.Once
}
func (b *LoaderBatch[K, R]) f() {
b.once.Do(func() {})
}