copycustomer -> copy
model: minor
unused genmodel & ecore files deleted
codegen
customer.copy() mess. Going to be reverted
Revert "customer.copy() mess. Going to be reverted"

This reverts commit 14709a80dec26020728571c3dbd488419cba5ce3.
Revert "codegen"

This reverts commit 2594c0b1df81631e4eab23b8231081837526e110.
Revert "copycustomer -> copy"

This reverts commit 53d9664e5d2ef0f0fcbdc84e6edcff4071ce42f5.
codegen