| Package | Description | 
|---|---|
| org.bukkit.entity | Interfaces for non-voxel objects that can exist in a  world, including all players, monsters, projectiles, etc. | 
| org.bukkit.inventory.meta | The interfaces used when manipulating extra data can can be stored inside
  item stacks. | 
| org.bukkit.potion | Classes to represent various  potionproperties and manipulation. | 
| Class and Description | 
|---|
| PotionEffect Represents a potion effect, that can be added to a  LivingEntity. | 
| PotionEffectType Represents a type of potion and its effect on an entity. | 
| Class and Description | 
|---|
| PotionEffect Represents a potion effect, that can be added to a  LivingEntity. | 
| PotionEffectType Represents a type of potion and its effect on an entity. | 
| Class and Description | 
|---|
| Potion Represents a minecraft potion | 
| Potion.Tier Deprecated.  | 
| PotionBrewer Represents a brewer that can create  PotionEffects. | 
| PotionEffect Represents a potion effect, that can be added to a  LivingEntity. | 
| PotionEffectType Represents a type of potion and its effect on an entity. | 
| PotionType | 
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