| Package | Description | 
|---|---|
| org.bukkit.attribute | Classes relevant to attributes. | 
| org.bukkit.inventory.meta | The interfaces used when manipulating extra data can can be stored inside
  item stacks. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| static AttributeModifier | AttributeModifier. deserialize(Map<String,Object> args) | 
| Modifier and Type | Method | Description | 
|---|---|---|
| Collection<AttributeModifier> | AttributeInstance. getModifiers() | Get all modifiers present on this instance. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| void | AttributeInstance. addModifier(AttributeModifier modifier) | Add a modifier to this instance. | 
| void | AttributeInstance. removeModifier(AttributeModifier modifier) | Remove a modifier from this instance. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| Multimap<Attribute,AttributeModifier> | ItemMeta. getAttributeModifiers() | Return an immutable copy of all Attributes and
 their modifiers in this ItemMeta. Returns null if none exist. | 
| Collection<AttributeModifier> | ItemMeta. getAttributeModifiers(Attribute attribute) | Return an immutable copy of all  AttributeModifiers
 for a givenAttribute | 
| Multimap<Attribute,AttributeModifier> | ItemMeta. getAttributeModifiers(EquipmentSlot slot) | Return an immutable copy of all  Attributes and theirAttributeModifiers for a givenEquipmentSlot.Any AttributeModifierthat does have have a givenEquipmentSlotwill be returned. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| boolean | ItemMeta. addAttributeModifier(Attribute attribute,
                    AttributeModifier modifier) | Add an Attribute and it's Modifier. | 
| boolean | ItemMeta. removeAttributeModifier(Attribute attribute,
                       AttributeModifier modifier) | Remove a specific  AttributeandAttributeModifier. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| void | ItemMeta. setAttributeModifiers(Multimap<Attribute,AttributeModifier> attributeModifiers) | Set all  Attributes and theirAttributeModifiers. | 
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