const Go1_18 … const Go1_19 … const Go1_20 … const Go1_21 … const Go1_22 … const Future … // AtLeast reports whether the file version v comes after a Go release. // // Use this predicate to enable a behavior once a certain Go release // has happened (and stays enabled in the future). func AtLeast(v, release string) bool { … } // Before reports whether the file version v is strictly before a Go release. // // Use this predicate to disable a behavior once a certain Go release // has happened (and stays enabled in the future). func Before(v, release string) bool { … }