Goods.IdentityHashtable.put Function
Maps the specified key to the specified value in this IdentityHashtable. Neither the key nor the value can be null. The value can be retrieved by calling the get method with a key that is equal to the original key.

Public object put (object, object)
  Type Name Description  
    object key the IdentityHashtable key.  
    object val the value.  
  Return Description  
    object the previous value of the specified key in this Hashtable, or null if it did not have one.