Uses of Interface
org.bukkit.inventory.InventoryHolder

Packages that use InventoryHolder 
Package Description
org.bukkit
The root package of the Bukkit API, contains generalized API classes.
org.bukkit.block
Classes used to manipulate the voxels in a world, including special states.
org.bukkit.entity
Interfaces for non-voxel objects that can exist in a world, including all players, monsters, projectiles, etc.
org.bukkit.entity.minecart
Interfaces for various Minecart types.
org.bukkit.event.world
Events triggered by various world states or changes.
org.bukkit.inventory
Classes involved in manipulating player inventories and item interactions.