How do you implement versioned Swagger documentation?

Versioned Swagger ensures clarity when multiple API versions coexist:

• Configure multiple SwaggerDoc groups in AddSwaggerGen().
• Use ApiExplorerSettings to group endpoints by version.
• Apply versioned routes (v1, v2) or header/query-based versioning.
• Expose separate Swagger UI endpoints for each version.
• Helps clients migrate safely while maintaining backward compatibility.