- Remove unused `generate_example_call` and `generate_example_response` functions
- Rename `example_call` to `example_request` in `DocMethod`
- Update schema example extraction to use `schema.example` directly
- Introduce `generate_request_example` and `generate_response_example` for dynamic example generation
- Change type of `id` from string to number in schema examples
PS: The work is still in progress
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