abstract
Enumeration<T>
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elements()
Returns enumeration of derived attributes
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abstract
T
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get(int i)
Returns the i-th derived attribute
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abstract
T
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get(String ID)
Returns the derived attribute with specified ID or null
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abstract
T
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remove(String ID)
Removes derived attribute with specified ID
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abstract
int
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size()
Returns the number of extra derived attributes
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