public interface Context
Object get(Object key) throws ContextException
ContextException
boolean contains(Object key)
void put(Object key, Object value) throws IllegalStateException
key
- the key of the itemvalue
- the itemIllegalStateException
- if context is read onlyvoid hide(Object key) throws IllegalStateException
key
- the items keyIllegalStateException
- if context is read onlyvoid makeReadOnly()