```go
type MusicEntry struct {
Id string
Name string
Artist string
Source string
Type string
}
type MusicManager struct {
musics []MusicEntry
}
func NewMusicManager() *MusicManager {
return &MusicManager{make([]MusicEntry, 0)}
}
```
"return"语句看不懂，能不能帮我拆一下？
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