This method is like _.clone except that it accepts customizer which is
invoked to produce the cloned value. If customizer returns undefined,
cloning is handled by the method instead. The customizer is invoked
with up to four arguments; (value [, index|key, object, stack]).
This method is like _.clone except that it accepts customizer which is invoked to produce the cloned value. If customizer returns undefined, cloning is handled by the method instead. The customizer is invoked with up to four arguments; (value [, index|key, object, stack]).