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Interface key.Referrer

public interface Referrer
If a class can have a reference to an atom, then it is a 'referrer', and should pass itself into that atom using the 'addReference()' routine and 'removeReference()' routine when it adds / removes its reference.

Method Index

o delete(Atom)
This method is called by a to all its referrer's when it is being deleted.
o swapout(Atom)
Stop referring to this atom, as its being swapped out of memory.

Methods

o delete 
 public abstract void delete(Atom a)
This method is called by a to all its referrer's when it is being deleted. You should clean up and remove all references to this atom

o swapout 
 public abstract void swapout(Atom a)
Stop referring to this atom, as its being swapped out of memory. Store the tag, if you so wish, or whatever. 

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