枚举分层结构
- java.lang.Object
- java.lang.Enum<E> (implements java.lang.Comparable<T>, java.lang.constant.Constable, java.io.Serializable)
- org.bukkit.block.structure.Mirror
- org.bukkit.block.structure.StructureRotation
- org.bukkit.block.structure.UsageMode
- java.lang.Enum<E> (implements java.lang.Comparable<T>, java.lang.constant.Constable, java.io.Serializable)