LimitsType
payments_limits
LimitsSerializer
LimitsAPIView
get_limits
Fixes: 1) Add missing `LimitsSerializer` import in `drf.views` module; Extra: 1) Update `.gitignore` to exclude `queries`; 2) Refactor schema and views to integrate new limits functionality.
Fixes: 1) Remove unused import for `UnknownGatewayError`; Extra: 1) Cleanup unreachable code and obsolete comments in `CallbackAPIView`.