cloner - The cloner that is performing the cloning operation. The
cloneFields method can call back into the cloner to make
clones if its subordinate fields.
original - The original object from which this object was cloned.
This is provided for the very rare case that this object needs
to refer to its original for some reason. In general, all of
the relevant values should have been transferred during the
shallow clone and this object need merely clone what it wants.
public boolean containsValue(java.lang.Object value)