https://docs.k42.com/k42-sdk/api-reference/cancel_transaction https://docs.k42.com/k42-sdk/api-reference/close_session https://docs.k42.com/k42-sdk/api-reference/create_session https://docs.k42.com/k42-sdk/api-reference/create_transaction https://docs.k42.com/k42-sdk/api-reference/finalize_transaction https://docs.k42.com/k42-sdk/api-reference/initialize https://docs.k42.com/k42-sdk/api-reference/set_session_basket_items https://docs.k42.com/k42-sdk/api-reference/set_session_basket_total https://docs.k42.com/k42-sdk/api-reference/token_encode https://docs.k42.com/k42-sdk/api-reference/token_scan https://docs.k42.com/k42-sdk/introduction https://docs.k42.com/k42-sdk/quickstart https://docs.k42.com/k42-sdk/usage-example