A freezable object has two states – frozen and unfrozen. When an object is frozen, it cannot be modified and it cannot even fires events but the unfrozen state, it works same as a normal object.
A Freezable object is a special type of object that exists in two states:frozen and unfrozen.
In unfrozen state,the Freezable object appears as if it is simple object.But in frozen state,
the Freezable object can not be modified.