Amazon's CodeWhisperer

https://guides.library.cornell.edu/copyright/publicdomain . The US copyright law shows where it's been patched over and over to bring conformity with new standards while being mostly bug compatible with the way things were. The US only went life plus 70 for works made since 1978 or published since 2002. Since US law is a mess and other countries don't need bug compatibility with US law, US copyright maximalists are pushing for life+70.