olemus
pindkoopia ja süvakoopia kombinatsioon
=
a combination of both shallow copy and deep copy

ülevaateid
https://en.wikipedia.org/wiki/Object_copying

https://stackoverflow.com/questions/7698312/why-lazy-copy-when-we-have-deep-copy-and-shallow-copy

https://medium.com/@ganeshraj020794/cloning-in-java-shallow-vs-deep-vs-lazy-and-a-small-hack-to-clone-java-objects-204bdba0f3f8

https://blog.csdn.net/liu_rockefeller/article/details/100013216